n. (Abbr. BW)
The use of disease-producing microorganisms, toxic biological products, or organic biocides to cause death or injury to humans, animals, or plants.
| Dictionary: biological warfare |
The use of disease-producing microorganisms, toxic biological products, or organic biocides to cause death or injury to humans, animals, or plants.
| 5min Related Video: biological warfare |
| World of the Body: biological warfare |
The deliberate spread of agents that cause disease is not just subject matter for thrillers, nor a concern of recent origin. History is replete with examples. The Greeks and Romans provide some of the earliest through their practice of polluting drinking water supplies with corpses. Emulation of this activity occurred in both the American Civil War and the Boer War. Thus cholera and typhoid, both water-borne diseases, may have been two early biological warfare agents.
A more calculated approach, perhaps, was the throwing of the bodies of plague victims over the walls of cities under siege. This stratagem was employed successfully both by the Tartars against the Genoese in the Crimean War of 1346, and in the Russo-Swedish Wars of 1710. Equally scheming was the request of the then British commander-in-chief in North America, Sir Jeffrey Amherst, to encourage the spread of smallpox among ‘disaffected tribes of Indians’. Unbeknown to the commander, a subordinate had similar thoughts, handing over, as presents to hostile chiefs, two blankets and a handkerchief from the smallpox hospital. The desired effect followed. In unvaccinated cases some 30% die of the disease within 9-12 days.
More sophisticated methods for spreading bacteria and viruses are now available to the military. The secret lies in ensuring that the organisms are live and viable after dissemination from a grenade, shell, bomb, or missile, or from the spray tank of an aircraft drone. All of these devices have been investigated for their usefulness as delivery vehicles, with some being more effective than others, suitability being as much a feature of the agent being carried as of the battlefield conditions.
Viability both before and after weaponization are equally important for candidate biological warfare agents. Most biological agents have a limited life, with their activity continually declining in storage unless steps are taken to slow the process down. Low-temperature storage or freeze-drying will help retain activity.
Bacteria or viruses would usually be delivered in a finely-dispersed aerosol with liquid droplet sizes ranging from 1 to 5 micrometres — small enough to enable penetration deep into the lungs. Agents unstable in aerosols might be spread in a powder or slurry, efficiency of dispersal being a key requirement.
Candidate biological warfare agents are those that resist environmental degradation through changes in temperature, humidity, or ultraviolet light. Even anthrax, long a favourite biological warfare agent, and renowned for its environmental persistence, will not survive under all circumstances. The wrong temperature, rate of temperature change, or degree of humidity will prevent anthrax bacteria forming spores, the spores being a form of hibernation in which the bacteria can survive more extreme environmental changes, yet retain infectivity.
Anthrax has a considerable biological warfare pedigree. The infectivity of the bacteria was studied on Russian and Chinese detainees, following deliberate contamination by Japanese scientists; some 3000 human subjects in total died as a result of Japanese experimentation, with a range of bacteria and viruses, at Camp 731 in Manchuria during 1938-45. The fruits of this research boosted the US offensive biological warfare programme. Japanese scientists received immunity from prosecution for war crimes by the US in exchange for research results. Less is known about the Soviet programme, but the accidental venting into the air of less than 1 g of anthrax from a military, microbiology laboratory, in Sverdousk in April 1979, led to at least 64 deaths. Thus, it would appear that anthrax was also a part of the Soviet biological warfare programme.
Prior to 1969, the US had an offensive biological weapons programme, with at least eight bacteria and viruses in munitions. A unilateral decision by President Richard Nixon led to their destruction between 1970-1, paving the way for the 1972 Biological Weapons Convention (BWC). This prohibits the development, production, stockpiling, transfer, acquisition, or retention of weapons based on bacteria, viruses, or toxins.
The former Soviet Union was a signatory to this Convention, and as such was obliged to disarm. However, as late as 1992, evidence from scientists defecting to the West indicated that an offensive biological warfare programme, run by the State Security Service, the KGB, was still functioning. This programme was stopped by the Russian Federation President, Boris Yeltsin, shortly after it became public knowledge.
No international mechanism exists to police the BWC. Negotiations under the auspices of the UN Conference on Disarmament are continuing to secure a treaty with powers analogous to the Chemical Weapons Convention (CWC). Formidable obstacles will need to be overcome before a treaty is ready for signature.
Given the support the CWC received from the chemical industry world-wide, negotiators will be looking to the pharmaceutical industry for equal encouragement to help secure a more robust biological weapons treaty. Culture facilities, such as those employed by the pharmaceutical industry, are required to produce the quantities of agents needed for biological weapons. Attempts were made by Russian scientists, at the Institute of Especially Pure Biopreparations in St Petersburg, to increase the infectivity of plague for use as a biological warfare agent. The plague bacterium under research at this vaccine production facility had developed resistance to sixteen different antibiotics. There is concern that other scientists may be tempted to try to alter the performance characteristics of more candidate biological warfare agents. The expertise and technology necessary to perform this work is becoming more prevalent.
Defences against biological warfare agents will always be limited. Predicting the likely agent(s) that will be used in war is guesswork, and hence vaccination, even if it were possible for a few, can never provide complete protection. Given the continuing interest in biological warfare, and the evidence that Iraq had produced significant quantities of several bacteria, including anthrax, a prescriptive treaty is long overdue. A new treaty will need to ensure that developing countries still have access to technology; that commercial sensitivities are taken into account; and that there are sufficient powers of inspection to detect illicit manufacture. Without a robust treaty, military defence budgets will escalate, but no sum of money will be sufficient to guarantee protection. Only a disarmament regime can provide this security.
— Alastair Hay
See also microorganisms; war and the body.
| Encyclopedia of Public Health: Biological Warfare |
Biological warfare is defined as the international use of biological agents or their by-products to harm human populations. Using biological agents to create mass casualties requires more than having the biological agents in hand—the agents must also be disseminated. Technology has made it easier to obtain and distribute harmful microorganisms. Since starting the Bioterrorism Preparedness and Response Program in 1999, the Centers for Disease Control and Prevention and its partners have developed laboratory protocols for the identification of threat agents and have begun to address the needs of public health in responding to an event.
(SEE ALSO: Anthrax; Antisocial Behavior; Arms Control; Contagion; Terrorism; War)
Bibliography
Khan, A.; Morse, S.; and Lillibridge, S. (2000). "Public Health Preparedness for Biological Terrorism in the USA." Lancet 356:1179–1182.
Stern, J. (1999). "The Prospect of Domestic Bioterrorism." Emerging Infectious Diseases 5 (July-August, Special Issue).
— DAVID A. SLEET; STEPHEN A. MORSE
| US Military Dictionary: biological warfare |
Warfare involving the use of bacteria, viruses, and other biological agents to kill, sicken, or disorient the enemy.
See the Introduction, Abbreviations and Pronunciation for further details.
| Britannica Concise Encyclopedia: biological warfare |
For more information on biological warfare, visit Britannica.com.
| Columbia Encyclopedia: biological warfare |
In 1972 the United States and the Soviet Union adopted an agreement, endorsed by the UN General Assembly and now ratified by more than 140 nations, to destroy existing stockpiles of biological weapons and refrain from developing or stockpiling new biological weapons. The treaty does allow research for defensive purposes, such as to develop antidotes to biological weapons. After the fall of the Soviet Union, however, it was disclosed that the Soviets had secretly increased research and production of a wide variety of deadly biological agents. Although Russian president Boris Yeltsin publicly ordered (1992) the abandonment of germ warfare, some expressed suspicion about the continued production of biological weapons in post-cold war Russia.
With the rise of extremist groups and the disintegration of the established international political order in the late 20th cent., biological weapons again began to be perceived as a serious threat. In the 1990s, after the Persian Gulf War, five hidden germ-warfare laboratories and stockpiles of anthrax, botulism, and gas gangrene bacteria were discovered in Iraq. In addition to Iraq and Russia, North Korea, Iran, Egypt, Israel, China, and other nations are suspected of various violations of the 1972 agreement.
In 2001, shortly after the terrorist attacks on the World Trade Center and Pentagon, anthrax was sent through the mail in bioterrorist attacks against several locations in the United States. There was, however, no clear connection between the two terror attacks. In an attempt to develop a warning system for a bioterror attack, the Environmental Protection Agency's air quality monitoring system was adapted (2003) to permit detection of an outdoor release of smallpox and other pathogens. Such a system, however, would not have detected the narrowly focused indoor anthrax attacks of 2001.
See also chemical warfare.
Bibliography
See study by J. Miller et al. (2001).
| Intelligence Encyclopedia: Biological Warfare |
Biological warfare, as defined by the United Nations, is the use of any living organism (e.g. bacterium, virus) or an infective component (e.g., toxin), to cause disease or death in humans, animals, or plants. In contrast to bioterrorism, biological warfare is defined as the "statesanctioned" use of biological weapons on an opposing military force or civilian population. Biological weapons include pathogenic viruses, bacteria, and biological toxins. Of particular concern are genetically altered microorganisms, which are engineered to target a specific group of people.
Early History of Biological Warfare
Examples of the use of biological weapons exist in ancient records. In the sixth century B.C., Assyrians poisoned enemy wells with ergot, a toxin derived from mold that grows on rye. Other records of battles document the use of diseased corpses to poison wells. In 1346, plague-infected corpses and carcasses were catapulted into Kaffa, a city in current day Crimea, by the Tartar army. The epidemic that resulted may have eventually led to the great Black Plague that afflicted Europe. In 1710, the Russian army used a similar military strategy when it invaded Sweden. The Spanish are reported to have contaminated French wine with blood taken from people suffering from leprosy in the mid-1400s. In the seventeenth century, a Polish general filled artillery shells with the saliva from rabid dogs.
Smallpox was used as a biological weapon several times during the colonization of the Americas. The Spanish explorer Pizarro gave blankets infested with the virus to natives in South America in the fifteenth century. Sir Jeffery Amherst presented blankets contaminated with the smallpox virus to native Americans during the French and Indian war between 1754 and 1767. The epidemic that followed resulted in the surrender of a strategic fort to the English. A Southern doctor is reported to have sold clothing contaminated with smallpox to the Union Army during the Civil War.
Modern History of Biological Warfare
During the twentieth century, modern scientific methods led to the development, refinement, and stockpiling of weapons of biological warfare by governments throughout the world. During World War I, Germany developed a biological warfare program based on the bacterium Bacillus anthracis and a strain of Pseudomonas known as Burkholderia mallei, which causes glanders disease in cattle. Dr. Anton Dilger, a German agent living in Washington D.C., reportedly grew anthrax and glanders bacteria in his home and then inoculated thousands of horses and cattle that were shipped to Allied troops in Europe. Many of the animals perished and hundreds of the troops exposed to these animals were secondarily infected by the diseases.
During World War II, prisoners in German Nazi concentration camps were infected with pathogens, such as Hepatitis A, Plasmodia spp., and two types of Rickettsia bacteria, during studies allegedly designed to develop vaccines and antibacterial drugs. A large reservoir in Bohemia was poisoned with sewage by the German army in 1945.
Between 1918 and 1945, the Japanese government conducted extensive biological weapon research at Unit 731 in occupied Manchuria, China. Prisoners of war were infected with a variety of pathogens, including Neisseria meningitis (meningitis), Bacillus anthracis (anthrax), Shigella spp. (shigellosis), and Yersinia pestis (black plague). Estimates are that over 3,000 prisoners died as a result of infection by these biological pathogens or execution following such infections. In 1941, the Japanese released an estimated 150 million potentially plague-infected fleas from aircraft over cities in China and Manchuria. After these infectious agents were released, outbreaks of plague occurred in many Chinese villages. In addition, approximately 10,000 illnesses and 1,700 deaths occurred among Japanese troops.
Driven by reports of Japanese and German programs to develop biological weapons, the Allies embarked on vigorous efforts to develop their own biological weapons during World War II. Britain produced five million anthrax cakes at the UK Chemical and Biological Defense Establishment at Porton Down with the intent of dropping them on Germany to infect the food chain. These weapons were never used. British open-air testing of anthrax weapons in 1941 on Gruinard Island in Scotland rendered the island inhabitable for five decades.
The United States government's biological warfare facility was headquartered at Fort Detrick in Maryland beginning in 1942. Weapons were also tested and produced in Colorado, Arkansas and Utah. Many different agents were studied including the bacteria that cause anthrax, plague, botulism, Q fever, and staphylococcal infections. Several viruses were also included in the research. The U.S. Army conducted a study in 1951–1952 called "Operation Sea Spray" to study wind currents that might carry biological weapons. As part of the project design, balloons were filled with Serratia marcescens (then thought to be harmless, but easily identifiable) and exploded over San Francisco. Shortly thereafter, there was a corresponding dramatic increase in reported pneumonia and urinary tract infections in the region.
The former Soviet Union was implicated in several incidents involving the development and release of biological agents. In 1979, an accidental release of a small amount of anthrax spores occurred at a bioweapons facility near the Soviet city of Sverdlovsk. At least 77 people were sickened and 66 died. All the affected people were some 4 kilometers downwind of the facility. Sheep and cattle up to 50 kilometers downwind became ill. Immediately following the incident, the Soviet government declared that the cause of the illnesses was contaminated meat. However, in 1992 Russian President Boris Yeltsin took responsibility, stating that the accident was the result of military research at the microbiology facility. Between 1975 and 1983, Soviet forces allegedly used "yellow rain" in military operations in Laos, Cambodia and Afghanistan. This substance, T2 toxin or trocothecene mycotoxin, is derived from the Fusarium fungi and is extremely damaging to the intestinal tract. The Soviet government has denied the use of T2 toxins, claiming that the yellow rain was the result of defecating bees.
In 1991, the Iraqi government admitted the existence of a biological weapons program within their military. They built bombs containing the botulinum toxin, anthrax and aflatoxins. Iraqi scientists also studied the uses of wheat cover smut, ricin and the toxins produced by Clostridium perfringens for biological weapons.
Diplomacy and biological warfare. The first diplomatic effort to limit biological warfare was the Geneva Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or Other Gases, and of Bacteriological Methods of Warfare. This treaty, ratified in 1925, prohibited the use of biological weapons; however, it was not effective as Germany, the United States, Britain, and the Soviet Union all had biological weapons programs up to the 1960s. More than 140 countries, including the United States, signed the Convention on the Prohibition of the Development Production, and the Stockpiling of Bacteriological (Biological) and Toxin Weapons and on Their Destruction, also called the Biological Weapons Convention (BWC) in 1972, with limited success. Although the United States formally stopped biological weapons research in 1969 (by executive order of then President Richard M. Nixon), the Soviet Union carried on biological weapons research until its demise. Despite being a signator to the BWC, the Iraqi government allegedly continued its buildup of biological weapons into the twenty-first century.
Following the Iraqi war, however, anticipated stockpiles of biological weapons were not immediately found.
Further Reading
Electronic
Rhode Island Department of Health: Bioterrorism Preparedness Program "History of Biological Warfare and Current Threat" <http://www.healthri.org/environment/biot/history.htm> (March 12, 2003).
Arizona Department of Health Services: Epidemiology and Surveillance "History of Biowarfare and Bioterrorism" <http://www.hs.state.az.us/phs/edc/edrp/es/bthistor2.htm> (March 12, 2003).
| Veterinary Dictionary: BW |
Abbreviation for body weight; used in medical records.
| Military Dictionary: biological warfare |
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Biological warfare (BW), also known as germ warfare, is the use of pathogens such as viruses, bacteria, other disease-causing biological agents, or the toxins produced by them as biological weapons (or bioweapons).
There is a clear overlap between biological warfare and chemical warfare, as the use of toxins produced by living organisms is considered under the provisions of both the Biological and Toxin Weapons Convention and the Chemical Weapons Convention. Toxins, which are of organic origin, are often called "midspectrum agents".
A biological weapon may be intended to kill, incapacitate, or seriously impair a person, group of people, or even an entire population. It may also be defined as the material or defense against such employment.
Biological warfare is a military technique that can be used by nation-states or non-national groups. In the latter case, or if a nation-state uses it clandestinely, it may also be considered bioterrorism.[1]
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The creation and stockpiling of biological weapons ("offensive biological warfare") was outlawed by the 1972 Biological Weapons Convention (BWC), signed by over 100 countries. The BWC remains in force, and it prohibits storage, stockpiling, and usage of these weapons. The rationale behind the agreement is to avoid the devastating impact of a successful biological attack which could conceivably result in millions, possibly even billions of deaths and cause severe disruptions to societies and economies. Many countries currently pursue "defensive BW" research (defensive or protective applications) which are not prohibited by the BWC.
As a tactical weapon, the main military problem with a BW attack is that it would take days to be effective, and therefore, unlike a nuclear or chemical attack, would not immediately stop an opposing force. Some biological agents (especially smallpox, plague, and tularemia) have the capability of person-to-person transmission via aerosolized respiratory droplets, which can be undesirable, especially if they are transmitted to unintended target populations, including neutral or even friendly forces. Containment of transmission is less of a concern for terrorists, but it was very much a concern for post-WWII BW development by major powers.
The consensus among military analysts is that, except in the context of bioterrorism, BW is of little military use.[citation needed]
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Biological warfare has been practiced repeatedly throughout history. Before the 20th century, the use of biological agents took three major forms:
Biological weapons are so lethal that one gram of purified botulinum toxin could kill 10 million people. It is said that it is 3 million times more deadly than sarin.
The earliest documented incident of the intention to use biological weapons is recorded in Hittite texts of 1500-1200 B.C, in which victims of plague were driven into enemy lands. Although the Assyrians knew of ergot, a parasitic fungus of rye which produces ergotism when ingested, there is no evidence that they poisoned enemy wells with the fungus, as has been claimed.
According to Homer's epic poems about the legendary Trojan War, the Iliad and the Odyssey, spears and arrows were tipped with poison. During the First Sacred War in Greece, in about 590 BC, Athens and the Amphictionic League poisoned the water supply of the besieged town of Kirrha (near Delphi) with the toxic plant hellebore. The Roman commander Manius Aquillus poisoned the wells of besieged enemy cities in about 130 BC.
During the 4th century BC Scythian archers tipped their arrow tips with snake venom, human blood, and animal feces to cause wounds to become infected. There are numerous other instances of the use of plant toxins, venoms, and other poisonous substances to create biological weapons in antiquity.[2]
In 184 B.C, Hannibal of Carthage had clay pots filled with venomous snakes and instructed his soldiers to throw the pots onto the decks of Pergamene ships. In about AD 198, the city of Hatra (near Mosul, Iraq) repulsed the Roman army led by Septimius Severus by hurling clay pots filled with live scorpions at them.[3]
When the Mongol Empire established commercial and political connections between the Eastern and Western areas of the world, its Mongol armies and merchant caravans probably inadvertently brought bubonic plague from central Asia to the Middle East and Europe. The Black Death swept through Eurasia, killing approximately one third to one half of the population and changing the course of Asian and European history.
During the Middle Ages, victims of the bubonic plague were used for biological attacks, often by flinging corpses and excrement over castle walls using catapults. In 1346, the bodies of Mongol warriors of the Golden Horde who had died of plague were thrown over the walls of the besieged Crimean city of Kaffa (now Theodosia). It has been speculated that this operation may have been responsible for the advent of the Black Death in Europe.[4]
At the siege of Thun l’Eveque in 1340, during the Hundred Years' War, the attackers catapulted decomposing animals into the besieged area.[5]
In 1422, during the siege of Karlstein Castle in Bohemia, Hussite attackers used catapults to throw dead (but not plague-infected) bodies and 2000 carriage-loads of dung over the walls.[6]
The last known incident of using plague corpses for biological warfare occurred in 1710, when Russian forces attacked the Swedes by flinging plague-infected corpses over the city walls of Reval (Tallinn).[7] However, during the 1785 siege of La Calle, Tunisian forces flung diseased clothing into the city.[6]
Though not used for warfare, in ancient times (circa 1 BC) one form of execution/torture was attaching a corpse to a live person. The person who carried the corpse would become a social outcast and die from sicknesses in about a week.[citation needed]
The Native American population was decimated after contact with the Old World due to the introduction of many different fatal diseases.[8] There two documented cases of alleged and attempted germ warfare. The first, during a parley at Fort Pitt on June 24, 1763, Ecuyer gave representatives of the besieging Delawares two blankets and a handkerchief that had been exposed to smallpox, hoping to spread the disease to the Natives in order to end the siege.[9] William Trent, the militia commander, left records that clearly indicated that the purpose of giving the blankets was "to Convey the Smallpox to the Indians."[10]
British commander Lord Jeffrey Amherst and Swiss-British officer Colonel Henry Bouquet, whose correspondence referenced the idea of giving smallpox-infected blankets to Indians in the course of Pontiac's Rebellion. Historian Francis Parkman verifies four letters from June 29, July 13th, 16th and 26th, 1763. Excerpts: Commander Lord Jeffrey Amherst writes July 16th, 1763, "P.S. You will Do well to try to Inocculate the Indians by means of Blankets, as well as to try Every other method that can serve to Extirpate this Execrable Race. I should be very glad your Scheme for Hunting them Down by Dogs could take Effect,..." Colonel Henry Bouquet replies July 26, 1763, "I received yesterday your Excellency's letters of 16th with their Inclosures. The signal for Indian Messengers, and all your directions will be observed."[11]
While the intent for biological warfare is clear, there is a debate among historians as to whether this actually took place despite Bouquet's affirmative reply to Amherst and each having written to the other about it twice. Smallpox transmitted to Native American tribes could have been due to the transfer of the disease to blankets during transportation. Historians have been unable to establish whether or not this plan was implemented, particularly in light of the fact that smallpox was already present in the region, and that scientific knowledge of disease at that time had yet to discover bacteria or develop an understanding of plague vectors.
Regardless of whether this plan was carried out, trade and combat provided ample opportunity for transmission of the disease. See also: Small pox during Pontiac's Rebellion.
The roots of diseases that killed millions of indigenous peoples in the Americas can be traced back to Eurasians living for millennia in close proximity with domesticated animals. Without long contact with domesticated animals, indigenous Americans had no resistance to plague, measles, tuberculosis, smallpox or most influenza strains.
In 1834 Cambridge Diarist Richard Henry Dana (Two Years Before the Mast; available in Project Gutenberg) visited San Francisco on a merchant ship. His ship traded many items including blankets with Mexicans and Russians who had established outposts on the northern side of the San Francisco Bay.
Local histories document that the California smallpox epidemic began at the Russian fort soon after they left. Blankets were a popular trading item, and the cheapest source of them was second-hand blankets which were often contaminated.
During the American Civil War, General Sherman reported that Confederate forces shot farm animals in ponds upon which the Union depended for drinking water.[citation needed] This would have made the water unpleasant to drink, although the actual health risks from dead bodies of humans and animals which did not die of disease are minimal.
Jack London in his story '"Yah! Yah! Yah!"' describes a punitive European expedition to a Pacific island deliberately exposing the Polynesian population to Measles, of which many of them died [3]. While much of the material for London's South Sea Tales is derived from his personal experience in the region, it is not certain that this particular incident is historical.
During the First World War, Germany pursued an ambitious biological warfare program. Using diplomatic pouches and couriers, the German General Staff supplied small teams of saboteurs in the Russian Duchy of Finland, and in the then-neutral countries of Romania, the US and Argentina.[citation needed]
In Finland, Scandinavian freedom fighters mounted on reindeer placed ampules of anthrax in stables of Russian horses in 1916 [4]. Anthrax was also supplied to the German military attache in Bucharest, as was Glanders, which was employed against livestock destined for Allied service.
German intelligence officer and US citizen Dr. Anton Casimir Dilger established a secret lab in the basement of his sister's home in Chevy Chase, Maryland, that produced Glanders which was used to infect livestock in ports and inland collection points including, at least, Newport News, Norfolk, Baltimore, and New York, and probably St. Louis and Covington, Kentucky. In Argentina, German agents also employed Glanders in the port of Buenos Aires and also tried to ruin wheat harvests with a destructive fungus.
The Geneva Protocol of 1925 prohibited the use of chemical weapons and biological weapons, but said nothing about production, storage or transfer; later treaties did cover these aspects. Twentieth-century advances in microbiology enabled the first pure-culture biological agents to be developed by WWII.
There was a period of development by many nations, and Japanese Unit 731, based primarily at Pingfan in occupied China and commanded by Shirō Ishii, did research on BW, conducted forced human experiments, often fatal, on prisoners, and provided biological weapons for attacks in China.[12]. Biological experiments, often using twins with one subject to the procedure and the other as a control, were carried out by Nazi Germany on concentration camp inmates, particularly by Joseph Mengele.
During the Sino-Japanese War (1937-1945) and World War II, Unit 731 of the Imperial Japanese Army conducted human experimentation on thousands, mostly Chinese, Russian, American prisoners.[13] In military campaigns, the Japanese army used biological weapons on Chinese soldiers and civilians.
For example, in 1940, the Imperial Japanese Army Air Force bombed Ningbo with ceramic bombs full of fleas carrying the bubonic plague.[14] A film showing this operation was seen by the imperial princes Tsuneyoshi Takeda and Takahito Mikasa during a screening made by mastermind Shiro Ishii.[15]
However, some operations were ineffective due to inefficient delivery systems, using disease-bearing insects rather than dispersing the agent as an aerosol cloud[12]. It is estimated that 400,000 Chinese died as a direct result of Japanese field testing of biological weapons.[16]
During the Khabarovsk War Crime Trials the accused, such as Major General Kiyashi Kawashima, testified that as early as 1941 some 40 members of Unit 731 air-dropped plague-contaminated fleas on Changde. These operations caused epidemic plague outbreaks.[17].
Some other firsthand accounts testify the Japanese infected civilians through the distribution of foodstuffs, such as dumplings and vegetables, contaminated with plague. There are also reports of contaminated water supplies. Three veterans of Unit 731 testified, in a 1989 interview to the Asahi Shimbun, that they were part of a mission to contaminate the Horustein river with typhoid near the Soviet troops during the Battle of Khalkhin Gol.[18]
In response to biological weapons development in Japan, and at the time suspected in Germany, the United States, United Kingdom, and Canada initiated a BW development program in 1941 that resulted in the weaponization of tularemia, anthrax, brucellosis, and botulism toxin.
The center for U.S. military BW research was Fort Detrick, Maryland, where USAMRIID is currently based; the first director was pharmaceutical executive George W. Merck. Some biological and chemical weapons research and testing was also conducted at Dugway Proving Grounds" in Utah, at a munition manufacturing complex in Terre Haute, Indiana, and at a tract on Horn Island, Mississippi[19].
Much of the British work was carried out at Porton Down. Field testing carried out in the United Kingdom during World War II left Gruinard island in Scotland contaminated with anthrax for the next 48 years.
During the 1948 Israel War of Independence, Red Cross reports raised suspicion that the Jewish Haganah militia had released Salmonella typhi bacteria into the water supply for the city of Acre, causing an outbreak of typhoid among the inhabitants. Egyptian troops later captured disguised Haganah soldiers near wells in Gaza, whom they executed for allegedly attempting another attack. Israel denies these allegations.[20][21]
During the Cold War, US conscientious objectors were used as consenting test subjects for biological agents in a program known as Operation Whitecoat.[22] There were also many unpublicized tests carried out on the public during the Cold War.[23]
Considerable research on the topic was performed by the United States (see US Biological Weapon Testing), the Soviet Union, and probably other major nations throughout the Cold War era, though it is generally believed that biological weapons were never used after World War II. This view was challenged by China and North Korea, who accused the United States of large-scale field testing of biological weapons, including the use of disease-carrying insects against them during the Korean War (1950-1953).
Cuba also accused the US of spreading human and animal disease on their island. [24] [25] Recently revealed documents[26][27] indicate that this was disinformation produced by Soviet intelligence.
At the time of the Korean War the US had only weaponized one agent, brucellosis (agent US), which is caused by Brucella suis. The original weaponized form used the M114 bursting bomblet in M33 cluster bombs.
While the specific form of the biological bomb was classified until some years after the Korean War, in the various exhibits of biological weapons that Korea alleged were dropped on their country nothing resembled an M114 bomblet. There were ceramic containers that had some similarity to Japanese weapons used against the Chinese in WWII, developed by Unit 731.[12]
Some of the Unit 731 personnel were imprisoned by the Soviets[citation needed], and would have been a potential source of information on Japanese weaponization. The head of Unit 731, Lieutenant General Shiro Ishii, was granted immunity from war crimes prosecution in exchange for providing information to the United States on the Unit's activities.[28]
The Korean War allegations also stressed the use of disease vectors, such as fleas, which, again, were probably a legacy of Japanese biological warfare efforts. The United States initiated its weaponization efforts with disease vectors in 1953, focused on Plague-fleas, EEE-mosquitoes, and yellow fever - mosquitoes (OJ-AP).[citation needed]. However, US medical scientists in occupied Japan undertook extensive research on insect vectors, with the assistance of former Unit 731 staff, as early as 1946.[28]
The United States Air Force was not satisfied with the operational qualities of the M114/US and labeled it an interim item until the US Army Chemical Corps could deliver a superior weapon. The Air Force also changed its plans and wanted lethal biologicals.[citation needed]
The Chemical Corps then initiated a crash program to weaponize anthrax (N) in the E61 1/2-lb hour-glass bomblet. Though the program was successful in meeting its development goals, the lack of validation on the infectivity of anthrax stalled standardization.[citation needed]
Around 1950 the Chemical Corps also initiated a program to weaponize tularemia (UL). Shortly after the E61/N failed to make standardization, tularemia was standardized in the 3.4" M143 bursting spherical bomblet. This was intended for delivery by the MGM-29 Sergeant missile warhead and could produce 50% infection over a 7-square-mile (18 km2) area.[citation needed]
Unlike anthrax, tularemia had a demonstrated infectivity with human volunteers (Operation Whitecoat). Furthermore, although tularemia is treatable by antibiotics, treatment does not shorten the course of the disease.
In addition to the use of bursting bomblets for creating biological aerosols, the Chemical Corps started investigating aerosol-generating bomblets in the 1950s. The E99 was the first workable design, but was too complex to be manufactured.[citation needed] By the late 1950s the 4.5" E120 spraying spherical bomblet was developed; a B-47 bomber with a SUU-24/A dispenser could infect 50% or more of the population of a 16-square-mile (41 km2) area with tularemia with the E120.[citation needed] The E120 was later superseded by dry-type agents.
Dry-type biologicals resemble talcum powder, and can be disseminated as aerosols using gas expulsion devices instead of a burster or complex sprayer.[citation needed] The Chemical Corps developed Flettner rotor bomblets and later triangular bomblets for wider coverage due to improved glide angles over Magnus-lift spherical bomblets.[citation needed] Weapons of this type were in advanced development by the time the program ended.[citation needed]
Richard Nixon signed an executive order on November 1969, which stopped production of biological weapons in the U.S. and allowed only scientific research of lethal biological agents and defensive measures such as immunization and biosafety. The biological munition stockpiles were destroyed, and approximately 2,200 researchers became redundant[19].
United States special forces and the CIA also had an interest in biological warfare, and a series of special munitions was created for their operations.[citation needed] The covert weapons developed for the military (M1, M2, M4, M5, and M32 - or Big Five Weapons) were destroyed in accordance with Nixon's executive order to end the offensive program. The CIA maintained its collection of biologicals well into 1975 when it became the subject of the senate Church Committee.
In 1972, the U.S. signed the Biological and Toxic Weapons Convention, which banned the "development, production and stockpiling of microbes or their poisonous products except in amounts necessary for protective and peaceful research." By 1996, 137 countries had signed the treaty; however it is believed that since the signing of the Convention the number of countries capable of producing such weapons has increased.
The Soviet Union continued research and production of offensive biological weapons in a program called biopreparat, despite having signed the convention. The United States was unaware of the program until Dr. Vladimir Pasechnik defected in 1989, and Dr. Kanatjan Alibekov, the first deputy director of Biopreparat defected in 1992.
After the 1991 Persian Gulf War, Iraq admitted to the United Nations inspection team to having produced 19,000 L of concentrated botulinum toxin, of which approximately 10,000 L were loaded into military weapons; the 19,000 L have never been fully accounted for. This is approximately 3 times the amount needed to kill the entire current human population by inhalation,[29] although in practice it would be impossible to distribute it so efficiently, and, unless it is protected from oxygen, it deteriorates in storage.[30]
On September 18, 2001 and for a few days after several letters were received by members of the U.S. Congress and media outlets containing anthrax spores: the attack killed five people. The identity of the perpetrator remained unknown until 2008, when a primary suspect was named. See 2001 anthrax attacks.[31]
Biological warfare is the deliberate use of disease and natural poisons to incapacitate humans. It employs pathogens as weapons. Pathogens are the micro-organism, whether bacterial, viral or protozoic, that cause disease. There are four kinds of biological warfare agents: bacteria, viruses, rickettsiae and fungi. Biological weapons are distinguished by being living organisms, that reproduce within their host victims, who then become contagious with a deadly, if weakening, multiplier effect. Toxins in contrast do not reproduce in the victim and need only the briefest of incubation periods; they kill within a few hours.[32]
Ideal characteristics of biological weapons targeting humans are high infectivity, high potency, non-availability of vaccines, and delivery as an aerosol.
Diseases most likely to be considered for use as biological weapons are contenders because of their lethality (if delivered efficiently), and robustness (making aerosol delivery feasible).
The biological agents used in biological weapons can often be manufactured quickly and easily. The primary difficulty is not the production of the biological agent but delivery in an effective form to a vulnerable target.
For example, anthrax is considered an effective agent for several reasons. First, it forms hardy spores, perfect for dispersal aerosols. Second, pneumonic (lung) infections of anthrax usually do not cause secondary infections in other people. Thus, the effect of the agent is usually confined to the target. A pneumonic anthrax infection starts with ordinary "cold" symptoms and quickly becomes lethal, with a fatality rate that is 90% or higher. Finally, friendly personnel can be protected with suitable antibiotics.
A mass attack using anthrax would require the creation of aerosol particles of 1.5 to 5 micrometres. Too large and the aerosol would be filtered out by the respiratory system. Too small and the aerosol would be inhaled and exhaled. Also, at this size, nonconductive powders tend to clump and cling because of electrostatic charges. This hinders dispersion. So the material must be treated to insulate and discharge the charges. The aerosol must be delivered so that rain and sun does not rot it, and yet the human lung can be infected. There are other technological difficulties as well.
Diseases considered for weaponization, or known to be weaponized include anthrax , ebola, Marburg virus, plague , cholera , tularemia, brucellosis, Q fever, Bolivian hemorrhagic fever, Coccidioides mycosis , Glanders, Melioidosis, Shigella, Rocky Mountain spotted fever, typhus , Psittacosis, yellow fever , Japanese B encephalitis , Rift Valley fever, and smallpox [19][33]. Naturally-occurring toxins that can be used as weapons include ricin, SEB, botulism toxin, saxitoxin, and many mycotoxins. The organisms causing these diseases are known as select agents. In the United States, their possession, use, and transfer are regulated by the Centers for Disease Control and Prevention's Select Agent Program.
Biological warfare can also specifically target plants to destroy crops or defoliate vegetation. The United States and Britain discovered plant growth regulators (i.e., herbicides) during the Second World War, and initiated an herbicidal warfare program that was eventually used in Malaya and Vietnam in counter insurgency. Though herbicides are chemicals, they are often grouped with biological warfare as bioregulators in a similar manner as biotoxins.[citation needed] Scorched earth tactics or destroying livestock and farmland were carried out in the Vietnam war and Eelam War in Sri Lanka.[citation needed]
The United States developed an anti-crop capability during the Cold War that used plant diseases (bioherbicides, or mycoherbicides) for destroying enemy agriculture. It was believed that destruction of enemy agriculture on a strategic scale could thwart Sino-Soviet aggression in a general war. Diseases such as wheat blast and rice blast were weaponized in aerial spray tanks and cluster bombs for delivery to enemy water sheds in agricultural regions to initiate epiphytotics (epidemics among plants). When the United States renounced its offensive biological warfare program in 1969 and 1970, the vast majority of its biological arsenal was composed of these plant diseases.[citation needed]
In 1980s Soviet Ministry of Agriculture had successfully developed variants of foot-and-mouth disease and rinderpest against cows, African swine fever for pigs, and psittacosis to kill chicken. These agents were prepared to spray them down from tanks attached to airplanes over hundreds of miles. The secret program was code-named "Ecology".[19]
Attacking animals is another area of biological warfare intended to eliminate animal resources for transportation and food. In the First World War German agents were arrested attempting to inoculate draft animals with anthrax, and they were believed to be responsible for outbreaks of Glanders in horses and mules. The British tainted small feed cakes with anthrax in the Second World War as a potential means of attacking German cattle for food denial, but never employed the weapon. In the 1950s the United States had a field trial with hog cholera.[citation needed]
Unconnected with inter-human wars, humans have deliberately introduced the rabbit disease Myxomatosis, originating in South America, to Australia and Europe, with the intention of reducing the rabbit population - which had devastating but temporary results, with wild rabbit populations reduced to a fraction of their former size but survivors developing immunity and increasing again.
It is important to note that all of the classical and modern biological weapons organisms are animal diseases, the only exception being smallpox. Thus, in any use of biological weapons, it is highly likely that animals will become ill either simultaneously with, or perhaps earlier than humans.
Indeed, in the largest biological weapons accident known – the anthrax outbreak in Sverdlovsk (now Yekaterinburg) in the Soviet Union in 1979, sheep became ill with anthrax as far as 200 kilometers from the release point of the organism from a military facility in the southeastern portion of the city (known as Compound 19 and still off limits to visitors today, see Sverdlovsk Anthrax leak).
Thus, a robust surveillance system involving human clinicians and veterinarians may identify a bioweapons attack early in the course of an epidemic, permitting the prophylaxis of disease in the vast majority of people (and/or animals) exposed but not yet ill.
For example in the case of anthrax, it is likely that by 24 – 36 hours after an attack, some small percentage of individuals (those with compromised immune system or who had received a large dose of the organism due to proximity to the release point) will become ill with classical symptoms and signs (including a virtually unique chest X-ray finding, often recognized by public health officials if they receive timely reports). By making these data available to local public health officials in real time, most models of anthrax epidemics indicate that more than 80% of an exposed population can receive antibiotic treatment before becoming symptomatic, and thus avoid the moderately high mortality of the disease.
The goal of biodefense is to integrate the sustained efforts of the national and homeland security, medical, public health, intelligence, diplomatic, and law enforcement communities. Health care providers and public health officers are among the first lines of defense. In some countries private, local, and state (province) capabilities are being augmented by and coordinated with federal assets, to provide layered defenses against biological weapons attacks. During the first Gulf War the United Nations activated a biological and chemical response team, Task Force Scorpio, to respond to any potential use of weapons of mass destruction on civilians.
The traditional approach toward protecting agriculture, food, and water: focusing on the natural or unintentional introduction of a disease is being strengthened by focused efforts to address current and anticipated future biological weapons threats that may be deliberate, multiple, and repetitive.
The growing threat of biowarfare agents and bioterrorism has led to the development of specific field tools that perform on-the-spot analysis and identification of encountered suspect materials. One such technology, being developed by researchers from the Lawrence Livermore National Laboratory (LLNL), employs a "sandwich immunoassay", in which fluorescent dye-labeled antibodies aimed at specific pathogens are attached to silver and gold nanowires. [34]
Researchers at Ben Gurion University in Israel are developing a different device called the BioPen, essentially a "Lab-in-a-Pen", which can detect known biological agents in under 20 minutes using an adaptation of the ELISA, a similar widely employed immunological technique, that in this case incorporates fiber optics. [35]
According to the United States Office of Technology Assessment, since disbanded, seventeen countries were believed to possess biological weapons in 1995: Libya, North Korea, South Korea, Iraq, Taiwan, Syria, Israel, Iran, China, Egypt, Vietnam, Laos, Cuba, Bulgaria, India, South Africa, and Russia.[19][36]
Bioweaponeers:
Writers and activists:
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