(NEXSTAR) – The flu is spreading far and wide ... about 97% have turned up positive for influenza A. Influenza A is further divided into subtypes. You may have heard of H1N1 or H3N2 – those ...

Recommendations on the strain composition of influenza virus vaccines for the 2025-2026 US season have been issued by FDA.

Specimens from patients that are positive for the influenza A virus but negative for seasonal flu subtypes such as A(H1) and A(H3) should be prioritized for further testing in a public health ...

Influenza viruses appear as three types ... Two proteins distinguish strain A subtypes: 15 variants of hemagglutinin (H), and nine of neuraminidase (N). A flu vaccine includes B and the most common A ...

has issued the company a conditional license for its Avian Influenza Vaccine, H5N2 Subtype, Killed Virus. The vaccine is labelled for use in chickens. The conditional license was granted on the ...

The influenza vaccine ... strain with the dominant virus strain circulating in Beijing contributed to its effectiveness. Variation in effectiveness among subtypes and age groups highlights ...

CHENNAI: The State Public Health Laboratory analysis shows that the increase in fever cases in the state is linked to Influenza subtype A(H3N2) virus and other subtypes. The analysis is in line ...