CDC Should Clarify Guidance on Vaccinating Those Previously Infected With COVID-19: Massie

The Centers for Disease Control and Prevention headquarters in Atlanta, Ga., on Sept. 30, 2014. Tami Chappell/Reuters

A public health agency should clarify whether Pfizer’s COVID-19 vaccine showed efficacy in those with a previous infection, Rep. Thomas Massie (R-Ky.) said.

The Centers for Disease Control and Prevention (CDC) advisory committee last month published recommendations for use of the vaccine. It said that a clinical trial showed the vaccine had consistently high efficacy for people with or without a previous infection.