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The most frequently seen viral infections are sore throat, sinusitis, the common cold, and other viral infections in the respiratory system like influenza (for example, Swine Flu A-H1N1/09, Avian/Bird Flu, and the many different common seasonal flu strains).
Viruses can be caught by swallowing or inhaling them, being bitten by insects or parasites, or through sexual transmission. The most common ones are passed person to person through direct skin to skin contact. Some are zoonotic, meaning we get them from animals, but most are passed from person to person.
Many of the common childhood diseases are caused by viruses. A large number of the respiratory system inflammation and infections are caused by viruses like croup, laryngotracheobronchitis (infection of the windpipe by a virus), and bronchiolitis (viral infection of deeper lung structures, the bronchioles). Infants, the elderly and frail, and people with underlying lung, heart, and other chronic diseases - like asthma, COPD, and diabetes - are especially susceptible and can have complications that are more severe when they get these types of viral infections. Viral pneumonia is often a secondary result of a respiratory virus infection. A Herpes virus causes an additional type of childhood disease which is known by all these various names: roseola infantum, Three Day Rash, Three Day Fever, Sixth Disease, Exanthematous Fever, and Rose Rash.
Another of the more common childhood viral diseases is Chickenpox, which is caused by a virus (Varicella-Zoster) that can reactivate many years later in life and become manifested then as Shingles. Measles are caused by the Rubeola virus; German Measles are caused by Rubella virus, Reyes syndrome in children occurs after a bout of influenza virus if aspirin has been given for fever. It is linked to the viral infection but the actual cause is still unknown other than the relationship between the flu and aspirin therapy. Doctors advise to never give aspirin to children for fever for this reason. Still another childhood disease that is viral is Mumps (epidemic parotitis), but it is also a very serious infection in adults.
Viruses often infect the nervous system, too. Such viral infections include: rabies, West Nile virus, and viral encephalitis and meningitis. Polio is a viral disease of the nervous system.
The skin can be infected, an example of a very common result of this type of viral infection is viral warts. The different Herpes viruses cause problems in the skin or mucous membranes in people, like Herpes Simplex (Fever Blisters) and Varicella-Zoster (Shingles), the late effect of Chickenpox.
There are actually eight different types of Herpes viruses. Genital Herpes is one of the well known STDs caused by viral infection. The roseola infantum mentioned above is called "Sixth Disease" because it is caused by the 6th Herpes virus, some of the other Herpes viruses are Epstein-Barr that causes infectious mononucleosis. CMV (Cytomegalovirus) creates serious infections in newborns and in people with HIV/AIDS and other chronic diseases that impact the ability to fight opportunistic diseases. It can also cause severe problems for those who are on medicines, like cancer treatment or transplant anti-rejection drugs, that cause weakened immune systems. Healthy people can also get symptoms similar to infectious mononucleosis from this type of virus. Human herpes-virus 8 has been implicated as a cause of cancer (Kaposi's sarcoma) in people with AIDS. The infections from Herpes viruses last a lifetime because they can lie dormant until years after the initial infection and then reactivate to produce new symptoms of the disease.
As mentioned above, some viruses can cause initial disease and later be linked to cancer. Hepatitis A, B, and C are caused by a virus infection which can also be linked to some cases of liver cancer. HPV (Human Papillomavirus) infections, a sexually transmitted virus, has been linked to Cervical cancer.
The heart can be attacked by viral myocarditis, a very significant and serious infection. Other extremely severe viral diseases are Yellow Fever, Smallpox, SARS (Severe Acute Respiratory Syndrome), Hemorrhagic Fevers (such as Ebola), Dengue Fever (a mosquito-borne disease), and Hantavirus infection which is passed from rodents to people.
These are just some of the many virus types and strains that are in our world and from which our bodies can protect us most of the time when we keep ourselves rested, well nourished, and if we avoid stress.
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Are bedbugs able to cause an infections in humans?
Yes
What type of organism is able to cause infections?
bactiria!
Can viruses survive cooking?
Some viruses may be able to stand the usual cooking temperatures, however, the influenza viruses and viruses that cause the common cold (and many other types) can be destroyed by normal cooking temperatures of 167-212°F [75-100°C].
3 types of bacteria that can cause disease?
There are three main types of micro organism that can cause disease Bacteria, these are prokaryotes and have no true nucleus. Bacterial diseases include tuberculosis, gonorrhea, tetanus etc. Infections can result when bacteria get into the "wrong parts" of the body and are able to reproduce. For example E.coli is normally excreted in the faeces but if ingested through poor hygience (faecal-oral) or through poor food preparation it can cause stomach upset. Bacterial infections can be treated with antibiotics. Fungi, these are eukaryotic organisms and include all yeasts. Fungi cause infections such as thrush, athletes foot and ringworm. Viruses, these are not alive but can cause damage to host cells. They need a host cell in order to grow and reproduce. Viral diseases include HIV, Influenza, measles, chicken pox, herpes. Antibiotics do not work on viruses as they need body cells to reproduce. When they leave the cell in which they invade they cause damage to the cell resulting in symptoms of the disease,
What are the harmful effects of viruses on other organism?
Viruses can cause detrimental effect on their host. They can cause a disease like Polio, pox, rabies etc. or they can impairs the immunity of our body such as HIV. They can also able to cause cancers in case of HTLV.
What blood cell kills infections?
White blood cells attack, engulfs and kills pathogens. Various types of white blood cells exist and each one is specialized on killing different types of pathogens. There are white cells that kill pathogens that cause acute infections while others target pathogens that cause chronic infections. The proportion of white cells found on examinationod blood sample could suggest the nature of infection we are dealing with.
How does one make their computer run faster?
Various types of computer viruses can cause computers to slowdown. A computer repair shop will be able to help speed up a computer including the technicians who work with Best Buy's Geek Squad.
How close are scientists to finding a cure for chickenpox?
Chickenpox is not my area of expertise. I do, however, happen to know a thing or two about viruses. What I can tell you is that Chickenpox is an infection that is caused by the Varicella Zoster Virus. Viruses are very small organisms that can cause serious infections. Currently, modern medicine isn't able to cure viruses, only prevent them. In some cases, we are able to develop a "vaccine" against a virus. Vaccines are administered before a person is exposed to infection and often times will help them develop an immunity to disease. There is currently no cure for Chickenpox, however there has been a vaccine developed.
Are viruses able to be cured?
No
What are antibiotics and how are they use?
Antibiotics are substances that kill bacteria. They are not able to neutralise viruses. Bacteria can become resistant to antibiotics, so misusing them for non-bacterial infections could have serious consequences rendering the antibiotic ineffective.
Can viruses cause mutations?
It is not believed so, but viruses are able to infect cells and replace the cell's DNA "instructions" with the virus' DNA or RNA instructions. This is how they reproduce using a host's cells to do the work. There is some thought in the scientific research areas that one day we may be able to do gene therapy using viruses to implant the correction into the target cell types, but not yet. Viruses themselves can mutate into new forms, however, and this may be what you are thinking of. The viruses are able to change the proteins in their capsid (coat) and make new viruses through this mutation that no longer get attacked by our immune systems. Our bodies no longer recognize them as the same with the different protein composition and our immune defenses that were developed against the original version of the virus won't work any more until our bodies develop new antibodies for the mutated strain of virus.
How do antimicrobial peptides work?
Antimicrobial peptides are broad anti-biotics that have evolved in all form of life as a way to fight off infectious diseases and viruses. Without it, you wouldn't be able to fight off any infections.
