In this Tuesday evening, May 21, 2019 photo, Summit County Rescue Group members Devon Haire, left, and Tyler McGuire set out to search for lost snowboarder John Moser in Dillon, Colo. Moser, who was found by Summit County Rescue Group and the ski patrol, was swept up by an avalanche as he and his friend Patrick Powers were attempting to hike back inbounds. (Hugh Carey/Summit Daily News via AP)

BRECKENRIDGE |  A tourism-dependent area in Colorado’s mountains has re-instituted a mask mandate because of a growing number of COVID-19 cases.

Starting Thursday, people will have to wear masks in public indoor spaces in Summit County, home to several ski resorts.

In a press release, the county’s public health department said the decision was made in response to an “alarming” increase in cases during the past week. Officials believe that’s due to the spread of the highly contagious Omicron variant, likely at indoor holiday gatherings.

The county has among the highest incidence rates in the United States, as does the Aspen area.

Summit County leaders had been reluctant to re-impose a mask mandate partly because it would put service workers in the difficult position of enforcing it, the Summit Daily reported. However, they were also concerned about the number of workers who have had to quarantine and saw the move as a way to help businesses.

“To me, it’s just a really commonsense approach and something we need to take to help mitigate this, even if it’s minuscule in what it does,” county commissioner Elisabeth Lawrence said. “It also provides a level of comfort for our locals.”

On Tuesday, Denver extended its latest mask mandate through Feb. 3.

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