Posted in Article Pfizer’s child-sized vaccine fails to produce expected immunity in younger kids; company adds third dose to trials – CNN 2021-12-18 Leave a Comment on Pfizer’s child-sized vaccine fails to produce expected immunity in younger kids; company adds third dose to trials – CNN Vaccine maker Pfizer said Friday that trials of its vaccine in children ages 2 to 5 show it did not provide the expected immunity in kids this age and it is adding a third dose to the regimen. Source: Pfizer’s child-sized vaccine fails to produce expected immunity in younger kids; company adds third dose to trials – CNN
