October 20th, 2009
The lowdown on the H1N1 vaccine.
What is the difference between the H1N1 and the regular (seasonal flu) vaccine?
Each year scientists take their best guess of what the top three flu strains will be for the following year. They didn’t know H1N1 would be emerging, so it’s not in this year’s seasonal flu cocktail.
Why do I need both?
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