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Swine flu shot protection? Maybe by November

Swine flu shot protection? Maybe by November

Health officials say it could late November before a significant number of Americans who get the swine flu vaccine are protected, health officials said Monday.
Roughly 50 million doses of vaccine are expected to be available by mid-October. But for those who get initial doses right away, that will only mark the beginning of a vaccination process that will take five or more weeks.
Health officials believe most people will need two shots, spaced three weeks apart, and it will take a week or two after the second dose before immunity kicks in. That's five or six weeks in all.
Health officials don't really know if that's good or bad news. Since it was first reported in April, swine flu has turned out to be not much more dangerous than seasonal flu, overall. Government experts say it may soon become just another variety of the flu, and perhaps will conform to the seasonal flu calendar _ vaccinated against in the fall, suffered through every winter.
But swine flu cases have persisted through this summer, especially in camps and other places where kids congregate. It's possible they will explode not long after kids return to schools and colleges this fall.
Clinical trials started just this month to evaluate the new vaccine's safety and effectiveness, and the first substantial set of results is not expected until next month.


Updated : 2020-12-04 04:57 GMT+08:00