Is the 2009 H1N1 vaccine a live vaccine?
Like the seasonal inactivated influenza vaccine, the 2009 inactivated H1N1 influenza vaccine does not contain a live virus. To make the vaccine, the virus is killed and then broken up, so the injection contains only certain parts of the virus. The nasal spray form of both the seasonal and H1N1 vaccines is made from a live virus but that virus is changed so that it can NOT cause disease.