Health official: Breakthrough cases make up 38% of Allegheny County's cases
Vaccinated residents made up about 38% of Allegheny County’s roughly 20,000 covid-19 cases in October and November, a health official said Wednesday. That’s around 7,700 cases among the vaccinated, said Dr. LuAnn Brink, chief epidemiologist for the county health department. Brink filled in for Dr. Debra Bogen, the county’s health...