Wrangell Sentinel -

ANCHORAGE (AP) - School officials in Alaska’s second-largest municipality implemented a new policy requiring masks at sporting events last week in response to coronavirus outbreaks at a half-dozen Matanuska-Susitna Borough district schools.

Three large high schools in the district — Colony, Palmer, Wasilla — are among five facilities closed as of Feb. 12 because of the outbreaks, the Anchorage Daily News reported. It was unclear when they would reopen.

Public health officials said some of the confirmed COVID-19 cases started with students mixing at school lunches, but most are attribu...