To prevent: you from getting the flu in the future. Although not completely protective , if you do get the flu - it usually lessens severity of symptoms.
Answered 6/19/2014
4k views
Poor analogy.: For the same reason you buy insurance, wear a seat belt or helmet, or use birth control. You will be well right up until the time that you are not.
Answered 10/4/2017
3.6k views
3 doctors weighed in across 2 answers
3 doctors weighed in across 2 answers
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