The FDA approves the first human bird flu vaccine. While there have not been any cases of bird flu in the U.S., the government will stockpile the vaccine in preparation for a bird flu outbreak.
Experts say this vaccine will provide protection for high risk individuals while another vaccine that fights the circulating strain of bird flu is developed.
In clinical trials, 45 percent of participants who got the vaccine developed antibody levels high enough to fight off the illness. The vaccine will not be available for commercial sale.