The United States may be headed for a rough flu season, with a virus that causes more severe symptoms than the one last year ...

Among patients hospitalized with severe influenza, those with A(H1N1) have more high-risk clinical indicators vs those with other subtypes.

The new trial, funded by Pfizer, compared the company’s mRNA shot to Fluzone, one of the most widely used seasonal flu ...

Health officials in Illinois are warning of a new and unexpected mutation that could make for a "more serious flu season" as ...

A mutated strain of the flu is surging worldwide, sparking concerns about a severe flu season in the U.S. Here's what to ...

As the holiday season rapidly approaches, it’s important to remember that we are also now heading into peak season for ...

A new H3N2 flu variant, subclade K, is spreading in the US, with concerns about its resistance to this year's flu vaccine and ...

For people younger than 65, U.S.-licensed flu vaccines had an estimated effectiveness of 44% to 54% that season. Among those who completed a 6-month follow-up, the mRNA vaccine had a relative efficacy ...

Massachusetts could be headed for a sharp uptick in flu cases in the coming weeks, public health experts warn, as a newly ...

On November 13, Spain's Ministry of Agriculture, Fisheries and Food imposed the confinement of all free-range poultry farms ...

Study shows high-dose vaccines work better for older adults while cell-based versions benefit younger people as respiratory ...

We're almost in the peak of flu season, with the CDC's recent report saying activity is "low but rising." Here's what ...