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 ...

Mar. 3, 2025 — As highly pathogenic H5N1 avian influenza continues to spread in the U.S., posing serious threats to dairy and poultry farms, both farmers and public health experts need better ...

Prior exposures to specific types of seasonal influenza viruses promote cross-reactive immunity against the H5N1 avian ...

For the first time since the COVID-19 pandemic began five years ago, flu-related deaths topped COVID-19-related deaths this winter. Those numbers reflect just how intense this year’s influenza season ...

During the 2010-2011 to 2024-2025 influenza seasons, 9% of pediatric influenza-associated deaths had influenza-associated encephalopathy or encephalitis (IAE).