The influenza vaccine shows the immune system what potential components of the virus it should focus its efforts on,” one ...

The variant is known as influenza A subtype H3N2 subclade K–sometimes called “subclade K” for short—and it has been detected ...

For intramuscular vaccines, the standard hemagglutination inhibition (HAI) titer used to infer immune protection is at least ...

US reports 1st human case of H5N5 bird flu strain in Washington state, with officials confirming no human-to-human transmission so far.

Type A viruses are the most significant for human and animal health, and they are all descended from avian viruses. The flu A ...

Amid months of divestment in federal public health agencies, the CDC has 60% fewer flu samples from other countries than it did in 2024, which could hamper development of an effective flu shot next ...