My friend said he has not gotten the flu in around nine years, and has not gotten it since, but one time I got the flu shot, literally a week later I gotten the flu virus.
It is important to remember in order to make a vaccine, they have to add a dosage of the virus. Im guessing this is why allot of people get sick or is not effective enough, the Influenza Virus maybe too little or too much in the vaccine.
for some people it works for others it makes them real sick and i am one of them. how can they really know how much of the virus to use i guess its back to being a guinea pig again uggg
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