@EMcCra2 @TheCogitoBlog @doritmi @windsun33 Not really true; even with waning immunity of acellular vax it causes decreased severity.
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@EMcCra2
@TheCogitoBlog@doritmi@windsun33 Important as pertussis has a high morbidity even in adults where mortality is low.Thanks. Twitter will use this to make your timeline better. UndoUndo
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