Centers for Disease Control and Prevention Director Dr. Tom Frieden, right, laughs as he receives a flu shot from nurse B.K. Morris during an event about flu vaccinations, Thursday, Sept. 17, 2015, at the National Press Club in Washington. It's time for flu shots again, and health officials expect to avoid a repeat of the misery last winter, when immunizations weren't a good match for a nasty surprise strain.
Centers for Disease Control and Prevention Director Dr. Tom Frieden, right, laughs as he receives a flu shot from nurse B.K. Morris during an event about flu vaccinations, Thursday, Sept. 17, 2015, at the National Press Club in Washington. It's time for flu shots again, and health officials expect to avoid a repeat of the misery last winter, when immunizations weren't a good match for a nasty surprise strain. Jacquelyn Martin AP
Centers for Disease Control and Prevention Director Dr. Tom Frieden, right, laughs as he receives a flu shot from nurse B.K. Morris during an event about flu vaccinations, Thursday, Sept. 17, 2015, at the National Press Club in Washington. It's time for flu shots again, and health officials expect to avoid a repeat of the misery last winter, when immunizations weren't a good match for a nasty surprise strain. Jacquelyn Martin AP

Health officials hope for better success fighting flu this year

September 17, 2015 4:04 PM