50 Facts About Influenza A
What is Influenza A?Influenza A is a extremely contagious respiratory unwellness due to the influenza A virus . This virus , part of the Orthomyxoviridae family , infects birds and some mammals , include humankind . Known for its power to mutate chop-chop , Influenza A can lead to seasonal flu outbreaks and even spheric pandemics . The computer virus has two mainsurfaceproteins , hemagglutinin ( HA ) and neuraminidase ( NA ) , which determine its subtypes , such as H1N1 or H3N2 ....