The Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC) have authorized a third dose of the Pfizer COVID-19 vaccines, which were initially two-dose vaccines. Both federal agencies said that people who are over the age of 65, have weakened immune systems, or have a chronic illness (such as obesity or high blood pressure) should receive a third dose of the vaccine. The FDA also recommended that people who work in jobs where they interact with the public also get a booster shot: teachers, health care workers, or grocery store workers, among other jobs.

Claim: Due to the increased spread of the Delta variant, people who have been vaccinated have become infected with COVID-19, leading some to think that the vaccines are no longer effective against the virus.
Rating: This claim is FALSE. No vaccine is 100% effective at preventing infections. According to the Centers for Disease Control and Prevention (CDC), COVID-19 infections among the fully vaccinated (also called “breakthrough infections”) are to be expected. The more important fact is that the COVID-19 vaccines are still largely effective at preventing hospitalizations and deaths. Getting vaccinated and wearing a mask in public are still the most effective ways to prevent becoming infected with COVID-19