It's called swine flu because in the past, the people who caught it had direct contact with pigs. That changed several years ago, when a new virus emerged that spread among people who hadn't been ...

The flu virus is lingering in Arizona and the season has been vicious. Pediatric flu deaths reached the highest level in ...

An epidemiologist makes the case that a rush of research to stop a swine flu outbreak led to an accidental lab release of an ...

The H1N1 swine flu virus appeared in the U.S. in April 2009 and never went away. After sweeping the globe, U.S. H1N1 swine flu cases surged as schools opened in the fall. What is H1N1 swine flu?

Influenza virologists around the world had for years been using freezers to store influenza virus strains, including some that had gone extinct in the wild. Fears of a new H1N1 swine flu pandemic ...

The A(H1N1)pdm09 viruses, adapted from H1N1, caused the Spanish Flu pandemic of 1918, which killed between 20-50 million people. The variant has been genetically traced to flu outbreaks in swine ...

Swine flu is still active in South Africa every winter, and very dangerous for the elderly, children, and people with HIV.

A case of H5N1 bird flu was confirmed in a pig on a backyard farm in Oregon, the first detection of the virus in swine in the country, the U.S. Department of Agriculture said. Pigs represent a ...

A major new UK study warns that evolving swine flu viruses in Europe could pose a serious future pandemic threat if left ...

Was it simply a coincidence that within months of Pvt. Lewis’ death from H1N1 swine flu, a heretofore extinct H1N1 influenza strain suddenly reentered the human population? Influenza virologists ...

All four flu pandemics — in 1918, 1957 and 1968 and the swine flu pandemic of 2009 — were caused by Type A viruses. Influenza B viruses, however, only circulate in humans. They are divided ...