A surgeon discourages parents from vaccinating their children in a recent episode of a podcast, claiming childhood vaccines contain “aborted babies,” aluminum, formaldehyde, “baby cow blood,” yeasts, and mercury.
Recommendation: 
Misleading claim circulates that updated COVID-19 vaccines are untested
Several popular vaccine opponents claim that the updated COVID-19 vaccines were not properly safety tested in humans, specifically emphasizing that Pfizer’s vaccine was tested in