In case you haven't yet seen it, yesterday the Centers for Disease Control and Prevention issued an open letter to the American public about the safety of the H1N1 flu vaccine:
The H1N1 vaccine is made the same way seasonal flu vaccines are made every year. Extensive testing and monitoring have shown that the vaccine is not only safe, but also an excellent match for the H1N1 flu virus. And remember that when you get vaccinated, you don’t just help yourself; you help your community by preventing the spread of the flu virus.
The letter is co-signed by about a billion major health organizations. Okay, not a billion, but a lot.