From the ASPR Blog: Would old vaccine work if needed during a pandemic?
Our nation started stockpiling millions of doses of flu vaccine to protect Americans against the H5N1 avian flu that spread in Asia beginning in 2004. But, would the vaccine that was stockpiled more than a decade ago still be safe and effective to use if this pandemic flu strain spread in the U.S. today? We believe so, but this aged vaccine has not been tested in humans, so we’re going to test it and find out. Learn More >>