The influenza A virus genome consists of eight segments of single-stranded, negative-sense viral RNA, which encode multiple ...

In recent months, Americans looking for eggs have faced empty shelves in their grocery stores. The escalating threat of avian ...

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In 1958, a new strain of influenza A with different HA and NA was identified and antigenic shift was discovered; the need for a trivalent vaccine was recognized. Technical advances have made it ...

Influenza is one of the most unpredictable ... Every now and then, the virus changes dramatically in a process called antigenic shift. When this occurs, people become even less immune, and the ...