Spanish flu pandemic was caused by a particularly virulent strain of influenza virus. It infected 500 million people, caused ...

First U.S. detection of virulent H5N9 strain, at a California duck farm, draws scrutiny as evidence of genetic reassortment ...

At the same time, recent CDC data shows that seasonal influenza A is rising across the U.S. — specifically the H1N1 (swine flu) and H3N2 strains. While it may just seem like a tiny change in numbers, ...

Flu has surged to high levels across the US, straining hospitals. Experts discuss 2024-25 flu season trends, symptoms to ...

Symptoms usually come on suddenly, according to the CDC, and can include fevers above 100.4 degrees F, dry cough, sore throat ...

Seasonal flu tends to spike from December to February. People who become infected tend to get a sore throat, cough, runny ...

Recent history makes clear that microbiological disasters can strike anytime. But a longer history should remind us of the ...

Another area of focus has been the antigenic properties of circulating influenza strains. Research on an H3N2 variant that dominated the 2021-22 Northern Hemisphere influenza season revealed that ...

Influenza is spreading across Indiana and has been responsible for at least 32 deaths so far this season. Influenza, or "flu, ...

Background Because inactivated trivalent influenza vaccines (TIVs) contain 1 influenza B strain, whereas 2 lineages ... titers of ≥1:40 against A/H1N1, A/H3N2, B/Victoria and B/Yamagata ...

The 2024-25 flu season continues to see elevated activity across the country, according to the U.S. Centers for Disease ...

Spanish flu pandemic was caused by a particularly virulent strain of influenza virus. It infected 500 million people, caused ...