An outbreak of H3N2 flu in India has left at least two people dead, according to health officials in the country. The virus is known for causing severe illness in young children and older adults. So ...

Prior exposure to one strain of influenza virus may weaken children's ability to mount an effective antibody response against their subsequent exposure to a different flu strain, according to a study ...

Prior exposure to one strain of influenza virus may weaken children's ability to mount an effective antibody response against their subsequent exposure to a different flu strain, according to a study ...

Add Yahoo as a preferred source to see more of our stories on Google. The new influenza strain, H3N2, continues to spike. This influenza season has caused record-breaking hospitalization and infection ...

Medically reviewed by Alicen Nelson, MD, MPH You may have heard the term H3N2 in the news or read about it online. But ...

WHO announces updated influenza vaccine strains for the 2026–27 northern hemisphere season, reflecting evolving flu virus ...

Viral mismatch between circulating strains and vaccine may have weighed down effectiveness ...

The WHO also recommended changing two other strains in flu shots for the fall. The recommendations include two influenza A ...

India is updating its seasonal flu vaccine for the 2026-27 season to combat a rapidly spreading new A(H3N2) variant. The ...

WHO recommends strains 2026 for Northern Hemisphere flu vaccines, updating all three viral strains to improve protection against emerging variants.

CEDAR SPRINGS, Mich. — A new influenza virus mutation is spreading across the United States, increasingly infecting Americans. It is a strain of influenza A called "H3N2 subclade K," according to the ...

Global health officials mandate a new flu vaccine to combat a late-emerging, severe H3N2 variant, as current shots proved 37% ...