Allegheny County reports rise in Covid-19 cases

Allegheny County on Monday reported 45 cases of Covid-19, a sharp increase in the numbers that have been low for the past several weeks. The county, in announcing the number, didn't have an immediate reason for the increase. And while there are potential reasons for the increase in reported cases that have nothing to do with a spike in cases — labs often have a delay in reporting cases to Allegheny County — the county in its statement didn't mince words in scheduling a news conference at 3 p.m.…