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Virus latency (or viral latency) is the ability of a pathogenic virus to lie dormant within a cell, denoted as the lysogenic part of the viral life cycle. [1] A latent viral infection is a type of persistent viral infection which is distinguished from a chronic viral infection. Latency is the phase in certain viruses' life cycles in which ...
Due to resistance from the U.S. and Russia, in 2002 the World Health Assembly agreed to permit temporary retention of the virus stocks for specific research purposes. [6] Destroying existing stocks would reduce the risk involved with ongoing smallpox research; the stocks are not needed to respond to a smallpox outbreak. [ 7 ]
Infectious disease experts remain vigilant for signs of next major outbreak
Some diseases have already been eliminated from large regions of the world, and/or are currently being targeted for regional elimination. This is sometimes described as "eradication", although technically the term only applies when this is achieved on a global scale. [77]
Taking precautions to protect yourself from a quartet of infectious diseases can lessen your odds of starting off 2025 sick. Public health experts are warning of a ‘quad-demic’ this winter.
Polio was eliminated from most parts of the world as part of a decadeslong effort by the World Health Organization and partners to wipe out the disease. Until it is gone from the planet, the virus ...
Some viruses also exhibit a dormant phase, called viral latency, in which the virus hides in the body in an inactive state. For example, varicella zoster virus causes chickenpox in the acute phase; after recovery from chickenpox, the virus may remain dormant in nerve cells for many years, and later cause herpes zoster (shingles). Acute disease
It’s a good time to brush up on what scientists know, and still don’t know, about how long people remain infectious with viral diseases — Covid, influenza, RSV — that are spreading across ...