CDC Updates Mask Guidance

CNN has reported, "To prevent further spread of the Delta variant, the US Centers for Disease Control and Prevention updated its mask guidance on Tuesday to recommend that fully vaccinated people wear masks indoors when in areas with "substantial" and "high" transmission of COVID-19, which includes nearly two-thirds of all US counties. New unpublished data showing that vaccinated people infected with the Delta coronavirus variant can have as much virus as those who are unvaccinated is the primary driver for the CDC's latest mask guidance change, a source involved with the decision process told CNN. Overall, vaccinated people still play a small role in transmission and breakthrough infections are rare."