It is important to note that the CDC's map monitors visits to the doctor ... are monitoring two predominant strains of seasonal flu—Type A H1N1 and Type A H3N2—that are causing most of the ...

The 2009 (H1N1) Pandemic First isolated from humans in Mexico and the USA. Caused approximately 0.5–1 million deaths worldwide. Shared striking similarities with the 1918 pandemic virus.

Catani and colleagues provide data on antigenic properties of neuraminidase proteins of pandemic H1N1 and show that antigenic diversity of the neuraminidase from 2009 to 2020 largely falls into two ...

We asked the experts to explain what makes this year's flu season so unusual. Colored scanning electron micrograph (SEM) of H1N1 influenza (flu) virus particle isolated from a lung cell.

Kids have been hit especially hard: as of February 22, 98 children—most of them unvaccinated—have died from flu in the U.S.

Pre-existing immunity against seasonal H1N1 flu might help explain why most reported human cases of H5N1 bird flu in the U.S. have not resulted in lethal outcomes, suggests a new study by ...