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Viral evolution is a subfield of evolutionary biology and virology that is specifically concerned with the evolution of viruses. [ 1 ] [ 2 ] Viruses have short generation times, and many—in particular RNA viruses —have relatively high mutation rates (on the order of one point mutation or more per genome per round of replication).
The first is by infecting an immune cell, which then carries the virus to the nervous tissue. Viral examples of this include the JC virus which infects B cells and HIV which infects CD4 T cells and macrophages to infiltrate the brain. The second is by crossing the blood capillaries as a free virus or in leukocytes. [6]: 23
If the virus indeed spilled over in a Wuhan wet market, the resulting seven million deaths worldwide make a strong case for better regulating the way we interact with the ecosystem, such as in ...
The evolutionary history of the human brain shows primarily a gradually bigger brain relative to body size during the evolutionary path from early primates to hominins and finally to Homo sapiens. This trend that has led to the present day human brain size indicates that there has been a 2-3 factor increase in size over the past 3 million years ...
The SARS-CoV-2 virus still kills thousands of people around the world each month, saddles still more with chronic symptoms known as Long COVID, and continues to evolve, with the highly ...
The following is a roundup of some of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines for COVID-19, the illness caused by the virus. The new ...
The H5N1 virus is a particularly lethal strain of influenza. Currently, it can infect humans, but it is not contagious between humans. Still, over 600 people worldwide are known to have died from animal-transmitted H5N1 virus, [13] so the transmissibility of the virus is of major concern to scientists.
While it will be with us for probably forever, we now have the ability to manage this virus in a way we did not 2-3 years ago. And that makes all the difference," Jha said.