FILE - In this Tuesday, Jan. 15, 2013 file photo, Carlos Maisonet, 73, reacts as Dr. Eva Berrios-Colon, a professor at Touro College of Pharmacy, injects him with flu vaccine during a v

 

              FILE - In this Tuesday, Jan. 15, 2013 file photo, Carlos Maisonet, 73, reacts as Dr. Eva Berrios-Colon, a professor at Touro College of Pharmacy, injects him with flu vaccine during a v
FILE - In this Tuesday, Jan. 15, 2013 file photo, Carlos Maisonet, 73, reacts as Dr. Eva Berrios-Colon, a professor at Touro College of Pharmacy, injects him with flu vaccine during a visit to the faculty practice center at Brooklyn Hospital in New York. Health officials said Thursday, Feb. 21, 2013 this season's flu shot was only 9 percent effective in protecting seniors against the most common and dangerous flu bug. Flu vaccine tends to protect younger people better than older ones and is never 100 percent effective. But experts say the preliminary results are disappointing and highlight the need for a better vaccine. (AP Photo/Bebeto Matthews, File)