Swine flu, scientifically known as the H1N1 virus, is making headlines again as cases surge in various parts of the country, ...

Like a patient suffering from a particularly tenacious case of, well, the flu, the H1N1 virus seemed to gain ground and then lose it over the weekend, leaving health officials cautious but hopeful ...

Influenza viruses are shifty entities. They accumulate small genetic changes on a regular basis, necessitating yearly updates to the flu vaccines because the prior year’s strain may not look much like ...

A new analysis suggests H1N1 deaths 15 times higher than lab tests counted. June 25, 2012— -- The swine flu virus, H1N1, may have killed 15 times the number of people counted by the World Health ...

This article was originally on a blog post platform and may be missing photos, graphics or links. See About archive blog posts. An oft-stated fear about the pandemic H1N1 flu is the possibility that ...

Pre-existing immunity against seasonal H1N1 flu might help explain why most reported human cases of H5N1 bird flu in the U.S.