11.   The agency has also recommended that doctors keep lists of patients needing delayed vaccines and call the patients once supplies are available.

12.   The vaccine may be needed only if there is a terrorist attack using the virus, an unlikely event.

13.   We need the vaccines.

14.   You can treat the infections, but more and more resist standard drugs, so a better vaccine is sorely needed.

15.   An American relief organization thought Japan would need flu vaccine for earthquake victims and offered a million doses.

16.   But ultimately, said Piot, a vaccine is needed.

17.   Contrary to popular belief, younger people often need the vaccine, he said, describing the young mother whose respiratory infection spread into her bloodstream.