Transient at best: A pregnant woman passes antibodies to her baby through the placenta.These antibodies are protective during and for a few months after birth, by disappear. The vaccine is rarely effective if given before a year and at that point brings immunity to 85% with one dose.A second dose brings it up to >95%. Dad passes nothing. Mom's is temporary, vaccination is required for best protection.
Answered 6/3/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
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