New Delhi, March 6 -- A new national study adds strong evidence that mask mandates can slow the spread of the coronavirus, and that allowing dining at restaurants can increase cases and deaths.

The Centers for Disease Control and Prevention released the study Friday.

"All of this is very consistent," CDC Director Dr. Rochelle Walensky said during a White House briefing on Friday. "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."

The study was released just as some states are rescinding mask mandates and restaurant limits. Earlier this week, Texas became the biggest state to lift its mask rule, joining a movement by many governors to loosen...