Flu season: How many shots?

(AP) -- Doctors don't know yet if it will take one dose or two of vaccine to protect against the new swine flu. Add that to vaccine for the regular winter flu, and it could be a multishot season for a lot of people - or a multisquirt season, for those who choose the FluMist nasal-spray version.

Read the whole article on Physorg

More from Physorg