Delta variant suspected in growing Provincetown, Mass., Covid-19 cluster NBC NewsMask advisories begin in parts of Massachusetts WWLP-22NewsProvincetown officials say positive COVID-19 cases declining Boston News, Weather, Sports | WHDH 7NewsCases tied to Provincetown COVID-19 cluster rise from 256 to 430 WCVB BostonCases tied to Provincetown COVID-19 cluster rise from 256 to 430, town manager says WCVB Channel 5 BostonView Full Coverage on Google News