The new one is great: The whole cell pertussis vaccine used before 1992 was harsh, producing fever in most infants by the 2nd dose.It was very effective in reducing the incidence of whooping cough to 2.5k/yr in the us and stopping kid deaths. After the present vaccine (ap) replaced the old one, the frequency of problems dropped to almost zero.Unfortunately, those who shun vaccines have driven yearly #>40k +>30 deaths.
Answered 10/24/2017
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6 doctors weighed in across 2 answers
A doctor has provided 1 answer
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