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If a pregnant woman gets immunized against the H1N1 flu virus, will the antibodies be passed to the fetus?

April 26, 2017antibodies fetus flu h1n1 immunized pregnant virus woman

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If a pregnant woman gets immunized against the H1N1 flu virus, will the antibodies be passed to the fetus?

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Yes, antibodies from the mother are passed to the fetus via placental circulation. However, immunity passed to a fetus or infant in this way decreases over time; by the time the infant is 6 to 12 months old, he or she would no longer have immunity to the H1N1 flu virus.