Join Date: Dec 2002
Location: the Seacoast of Bohemia
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In the US the first doses of the vaccine are given at age two months. In some other countries the first dose comes at three months.
The current strategy is to vaccinate women during pregnancy in an attempt to imitate the immunity that most mothers used to have naturally. Since it is well known that whatever immune response they can provoke with the vaccine doesn't last, the recommendation is to give the vaccine during EVERY pregnancy.
Scary, since studies of outcomes are few and far between and also short-term.
Just to clarify the reasons behind the pregnancy recommendations.