'Very reasonable' for local officials to reimplement mask mandates amid delta surge: Dr. Vivek...

Local officials have the right to reimplement mitigation strategies to stop the spread of COVID-19 amid a surge in cases fueled by the delta variant, U.S. Surgeon General Dr. Vivek Murthy said Sunday.

"Unfortunately we're seeing rises, particularly among the unvaccinated in many parts of the country now," Murthy told ABC "This Week" co-anchor Martha Raddatz.

Approximately 97% of COVID-19 hospitalizations in the U.S. are among the unvaccinated and at least 58% of current reported cases were directly linked to the delta variant. At the end of May, the variant was estimated to account for just over 3% of new cases.

The Centers of Disease Control and Prevention has for the last two months said that vaccinated individuals can enter public, indoor spaces without a mask. Amid a surge in cases, Los Angeles County reinstated its indoor mask mandate in all public places for all individuals, regardless of vaccination status and at least 10 additional counties in California, including the city of Berkeley, have highly recommended all residents wear masks indoors again.