Two surface proteins, HA and NA, determine the antigenic properties of influenza virus strains. In 1958, a new strain of influenza A with different HA and NA was identified and antigenic shift was ...

“As oseltamivir is the most widely used therapeutic and prophylactic against IAV [influenza A virus], the continued circulation of viruses harboring NA-H275Y may necessitate a re-evaluation of ...

Two surface glycoproteins, hemagglutinin (HA) and neuraminidase (NA), and the M2 ion-channel protein are embedded in the viral envelope, which is derived from the host's plasma membrane.

The flu (influenza) is a serious virus that causes millions of illnesses each year. Symptoms include sneezing, muscle aches, and a fever. Most cases of the flu are mild enough to treat yourself at ...

Variations in the HA and NA genes determine the subtype and strain. It is possible to sequence the entire viral genome of influenza via reverse transcription of all eight RNA segments. Gene ...