Seasonal Influenza (Flu) On February 24, 2010 vaccine experts voted that everyone 6 months and older should get a flu vaccine next season. CDC’s Advisory Committee on Immunization Practices (ACIP) voted for “universal” flu vaccination in the U.S. to expand protection against the flu to more people. Next season’s vaccine will protect against the 2009 H1N1 pandemic virus and 2 other flu viruses. Why the Flu Vaccine Doesn’t Work The Centers for Disease Control (CDC) is looking at whether or not the flu vaccine is effective. Preliminary results indicate you’ll get just as sick (with colds, flu, flu-like illnesses) if you got the vaccine than if you didn’t. Why doesn’t the vaccine work? In order to understand the answer, you’ll need to understand some specifics about the flu vaccine and a bit about how immunity works. Incomplete Protection Against Intended Targets You may not even get protection against the intended virus. Why? First, because viruses change over time. The piece that was in the vaccine may not ‘look’ the same (chemically) as the real thing (months later, after all!). Second, the vaccine may not have given you enough stimulation to fight off the disease. Bottom line: The flu vaccine varies in effectiveness from year-to-year. Even in a best-case scenario, it won’t always protect against the flu. The CDC study didn’t say that the vaccine didn’t work; it says the vaccine didn’t protect people from getting sick. Even with imperfect effectiveness, the vaccine is indicated for certain people. In my opinion, however, the vaccine isn’t for everyone and certainly shouldn’t be required for otherwise healthy people. Much better approach Make sure your immune system is strong. Eat right, excersize, reduce stress in your life.

March 4, 2010