New Flu Strain 2025. Australia's surveillance of bird flu has been described as a possible model to follow globally, with the spread of the h5n1 strain of the virus causing concerns for international. That’s because there have been no confirmed flu cases caused by the influenza b.


New Flu Strain 2025

Experts who advise the fda voted unanimously to change the formula for flu vaccines from four strains to three. For more than a decade, the annual flu shot has protected against four types of the influenza virus — but this year, that has changed.

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