Search results
Results From The WOW.Com Content Network
They have a total genome length that is 10,000–14,600 nucleotides (nt). [7] The influenza A genome, for instance, has eight pieces of segmented negative-sense RNA (13.5 kilobases total). [8] The best-characterised of the influenzavirus proteins are hemagglutinin and neuraminidase, two large glycoproteins found on the outside of the viral ...
Influenza viruses A and B are estimated to have diverged from a single ancestor around 4,000 years ago, while the ancestor of influenza viruses A and B and the ancestor of influenza virus C are estimated to have diverged from a common ancestor around 8,000 years ago. [40] Outbreaks of influenza-like disease can be found throughout recorded history.
By mid-2008, over 3000 isolates had been completely sequenced from influenza viruses that are endemic in human ("human flu") avian ("bird flu") and swine ("swine flu") populations, including many strains of H3N2 (human), H1N1 (human), and H5N1 (avian).
Influenza B virus is the only ... The influenza B virus genome is 14,548 ... response across the population. The main cause of influenza ...
Influenza A virus and influenza B virus have eight genome segments that encode 10 major proteins. ... neonatal size, ... immunity in the population, novel influenza ...
The Influenza Research Database (IRD) [1] [2] [3] is an integrative and comprehensive publicly available database and analysis resource to search, analyze, visualize, save and share data for influenza virus research.
Further analysis of HA has shown it to have a very small effective population size relative to the census size of the virus population, as expected for a gene undergoing strong positive selection. [44] However, across the influenza genome, there is surprisingly little variation in effective population size; all genes are nearly equally low. [45]
Influenza A virus subtype H5N1 (A/H5N1) is a subtype of the influenza A virus, which causes influenza (flu), predominantly in birds. It is enzootic (maintained in the population) in many bird populations, and also panzootic (affecting animals of many species over a wide area). [1]