Vaccinated People Can Spread Delta Variant, Based On Data Behind The CDC Mask Advice
In an outbreak in Provincetown, Mass., three-quarters of cases occurred in fully vaccinated people. The study's findings suggest that vaccinated people infected with Delta can transmit the virus.
When the Centers for Disease Control and Prevention revised its mask guidance this week to urge even vaccinated people to wear masks indoors, it was criticized for not citing data in making that move.
