The Virus Spread Where Restaurants Reopened or Mask Mandates Were Absent

Even as officials in Texas and Mississippi lifted statewide mask mandates, researchers at the Centers for Disease Control and Prevention on Friday offered fresh evidence of the importance of face coverings, reporting that mask-wearing mandates were linked to fewer infections with the coronavirus and Covid-19 deaths in counties across the United States.

Federal researchers also found that counties opening restaurants for on-premises dining — indoors or outdoors — saw a rise in daily infections about six weeks later, and an increase in Covid-19 death rates about two months later.

The study does not prove cause and effect, but the findings square with other research showing that masks prevent infection and that indoor spaces foster the spread of the virus through aerosols, tiny respiratory particles that linger in the air.

“You have decreases in cases and deaths when you wear masks, and you have increases in cases and deaths when you have in-person restaurant dining,” Dr. Rochelle P. Walensky, the director of the C.D.C., said on Friday. “And so we would advocate for policies, certainly while we’re at this plateau of a high number of cases, that would listen to that public health science.”

Länk NYT