page = covid-19 : npr
url = https://www.npr.org/tags/804916759/covid-19
Pedestrians and cyclists head down Commercial Street in Provincetown, Mass., in May 2020. A study of a new outbreak in Provincetown found that three-quarters of those infected with the virus were fully vaccinated. Maddie Meyer/Getty Images hide caption
Vaccinated People Can Spread Delta Variant, Suggests Data Behind The CDC Mask Guidance
July 30, 2021 • 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.