Immunity Against Seasonal H1N1 Flu Reduces Bird Flu Severity in ... when just one change can increase the risk of becoming a pandemic virus? A recent study ... Pregnancy Enhances Natural Immunity ...

Not since the H1N1 pandemic of 2009 has the country been hit this hard by the influenza virus. This has been the worst flu season in a generation for the U.S. Not since the H1N1 pandemic of 2009 has ...

Low vaccination rates for influenza viruses and the lack of an HSV vaccine underscore the need for a new approach to reduce ...