The influenza A virus genome consists of eight segments of single-stranded, negative-sense viral RNA, which encode multiple ...

U.S. approves conditional use of avian influenza vaccine amid spreading outbreak U.S. greenlights temporary use of bird flu ...

we immunized BALB/c mice with the trivalent influenza vaccine manufactured for vaccination during the 1998–1999 season. We vaccinated each mouse with 10% of a human dose (1.5 μg hemagglutinin ...

The first inactivated influenza vaccine was monovalent (influenza ... viruses isolated during the 1900s); The subtype [16 possible hemagglutinin and 9 possible neuraminidase subtypes].

Until recently, all influenza vaccines were prepared by culturing ... viruses isolated during the 1900s); The subtype [16 possible hemagglutinin and 9 possible neuraminidase subtypes].

Our current influenza vaccines are strain-specific and often ... itself to receptors on the cell surface using a protein called hemagglutinin (HA). To a lesser extent, the virus can also use ...

"The Chinese poultry lineage may have experienced more vaccine-driven selection compared to other lineages," the researchers wrote.

The winter flu season features two types of influenza. Here's what you need to know about them and how they differ.

Flu A and flu B are two different strains of influenza, explains Thomas Russo, M.D., professor and chief of infectious ...

Influenza is a highly contagious viral infection that affects the respiratory system. Although often dismissed as a seasonal ...

The researchers note that viral evolution of hemagglutinin can lead to resistance against vaccines and can sometimes ... evolution of H5 subtype avian influenza virus, Science Advances (2025).

Current vaccines for bird flu Seasonal flu vaccines don’t protect against avian influenza A viruses ... that closely match the hemagglutinin (HA) protein of the H5N1 avian flu strains found ...