human
I've heard that the swine flu vaccine is a live virus, and it can cause serious side effects. Is this
assistant
That's true. The H1N1 vaccine contains a weakened form of the influenza virus. It's not a live virus, but it can still cause mild symptoms like fever, soreness, and fatigue. These are usually mild and last for a few days. You should talk to your doctor if you have any concerns about getting vaccinated.