The isolation of influenza virus 80 years ago in 1933 very quickly led to the development of the first generation of live-attenuated vaccines. The first inactivated influenza vaccine was ...

Influenza A is believed to be the most severe type of flu virus for humans, although this is the subject of debate, as there is some evidence to suggest that influenza B might be equally as dangerous.

Influenza virus is an infectious agent belonging to the virus family Orthomyxoviridae that causes a respiratory tract infection (influenza or 'flu') in vertebrates. There are three main species ...

Every winter, influenza returns with a new variant. People who have previously been infected with or vaccinated against flu may have some protection, but this depends on how well their immune system’s ...

Avian influenza A(H5N1) virus is spreading through dairy herds across the United States. In this report, wastewater surveillance shows the increase of H5N1 across 10 urban communities.

Scientists have discovered that H5N1, the strain of highly pathogenic avian influenza virus currently spreading in U.S. dairy cows, only needs a single mutation to readily latch on to human cells ...