This website will be offline for maintenance on Saturday, November 17th, 2018, from approximately 7:00 AM EST and 12:00 PM (noon) EST. Thank you for your patience.

Evolving viruses in pigs pose new swine flu threat

While swine flu viruses have long been considered a risk for human pandemics, and were the source of the 2009 pandemic H1N1 virus, attention has recently turned to the transmission of flu viruses from humans to pigs.

“Once in pigs, flu viruses from humans continue to evolve their surface proteins, generically referred to as antigens, […]