Examples of common human diseases caused by viruses include the common cold,influenza, chickenpox and cold sores. Many serious diseases such as ebola, AIDS, avian influenza and SARS are caused by viruses. The relative ability of viruses to cause disease is described in terms of virulence. Other diseases are under investigation as to whether they too have a virus as the causative agent, such as the possible connection between human herpes virus six (HHV6) and neurological diseases such as multiple sclerosis and chronic fatigue syndrome. There is controversy over whether the borna virus, previously thought to cause neurological diseases in horses, could be responsible for psychiatric illnesses in humans.
Viruses have different mechanisms by which they produce disease in an organism, which largely depends on the viral species. Mechanisms at the cellular level primarily include cell lysis, the breaking open and subsequent death of the cell. In multicellular organisms, if enough cells die the whole organism will start to suffer the effects. Although viruses cause disruption of healthy homeostasis, resulting in disease, they may exist relatively harmlessly within an organism. An example would include the ability of the herpes simplex virus, which causes cold sores, to remain in a dormant state within the human body. This is called latency and is a characteristic of the all herpes viruses including the Epstein-Barr virus, which causes glandular fever, and the varicella zoster virus, which causes chickenpox. Most people have been infected with at least one of these types of herpes virus. However, these latent viruses might sometimes be beneficial, as the presence of the virus can increase immunity against bacterial pathogens, such as ''Yersinia pestis''. On the other hand, latent chickenpox infections return in later life as the disease called shingles.
Some viruses can cause life-long or chronic infections, where the viruses continue to replicate in the body despite the host's defence mechanisms. This is common inhepatitis B virus and hepatitis C virus infections. People chronically infected are known as carriers, as they serve as reservoirs of infectious virus. In populations with a high proportion of carriers, the disease is said to be endemic. In contrast to acute lytic viral infections this persistence implies compatible interactions with the host organism. Persistent viruses may even broaden the evolutionary potential of host species.
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The viral diseases include: yellow fever, Japanese encephalitis, La Crosse encephalitis, Eastern equine encephalitis (EEE) and Western equine encephalitis (WEE), dengue fever, chikungunya, epidemic polyarthritis, Rift Valley fever, Ross River Fever, St. Louis encephalitis, West Nile virus (WNV) and HIV.
Viruses cause illnesses such as small pox and chicken pox
It can cause harm and death.
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The Human Papilloma Virus (HPV)
Enzymes needed for the virus will not be found in humans.
Warts are caused by a virus that only humans can carry.
The scientific name for Andes virus is Andes orthohantavirus. It is a type of hantavirus that can cause Hantavirus Pulmonary Syndrome in humans.
Influenza A virus H5N1, is known as "bird flu". H5N1, is a subtype of the influenza A virus which can cause illness in humans and animals. A filtered and purified influenza A vaccine for humans is being developed.
Viruses can cause colds, HIV, chickenpox, and many other damages.
Yes, Dengue fever is a disease caused by one of a number of viruses that are carried by mosquitoes. These mosquitoes then transmit the virus to humans.
How is the hanta virus carried and how do humans get it
No. Yellow fever is caused by a virus that is carried by mosquitoes.
Ebola is caused by infection with a virus of the family Filoviridae, genus Ebolavirus. There are five identified Ebola virus species, four of which are known to cause disease in humans: Ebola virus (Zaire ebolavirus); Sudan virus (Sudan ebolavirus); Taï Forest virus and Bundibugyo virus (Bundibugyo ebolavirus). The fifth, Reston virus (Reston ebolavirus), has caused disease in nonhuman primates, but not in humans.
The only thing i can think of that mimicks humans is a virus, we spread, adapt and evolve like a virus.
The Marburg viruses are two viruses [ Marburg virus (MARV) and Ravn virus (RAVV)] that cause hemmoraghic fever in humans and non-human primates.