Even with limited data, researchers fear the presently overlooked pair represent "a major threat to public health." ...

Vaccine effectiveness against severe illness was 43% among children with underlying conditions and 53% among those without.

Post-2020, highly pathogenic avian influenza H5 circulation is characterised by spatially expanded ecological suitability, changes in key environmental predictors, and a wider range of avian species ...

Serious infections with influenza A viruses are characterized by an excessive immune response, known as cytokine storm. It was previously unclear why some virus strains trigger these storms, while ...

Demonstrators argued that getting the flu vaccine should be a choice. Hundreds of people gathered Sunday to protest a new flu vaccine mandate for Massachusetts students, enacted as school districts ...