The crystal structure of the hemagglutinin of both ... to monitor the epidemiology and health burden of the A/H1N1 influenza virus.

We've all heard of "the flu" but when it comes to types ... the dominant circulating strains of influenza A among humans are H1N1 and H3N2. This means that one contains hemagglutinin 1 and ...

This then leads to a phenomenon called “antigenic drift.” Even if the same H and N numbered virus, such as H1N1, circulates in a subsequent flu season, the virus will be slightly different ...