Fourth Pfizer Dose Better for Severe Than Symptomatic COVID: Study

Compared with a third dose, a fourth dose was found to be 45% more effective against infection and 74% more effective against death. But a leading expert says it "will have no impact on this pandemic."
Medscape Medical News
Compared with a third dose, a fourth dose was found to be 45% more effective against infection and 74% more effective against death. But a leading expert says it «will have no impact on this pandemic.»
Medscape Medical News