PITTSBURGH, Pa. (WPXI) — The novel coronavirus has reached western Pennsylvania, with a presumptive case of COVID-19 announced Friday in Washington County and two cases confirmed in Allegheny County Saturday. State and local leaders are urging people to take extra precautions and that has led to the cancellation of events as well as Governor Tom Wolf announcing the closure of Pennsylvania’s public schools for 10 days. Giant Eagle and Walmart announced that all of their stores across the region and country will have different hours to combat the spread of the coronavirus. Starting March 15, Walmart stores and neighborhood markets will be open from 6 a.m. to 11 p.m. until further notice. The Port Authority of Allegheny County also announced it will be disinfecting vehicles every 24 hours after two cases of coronavirus were announced in the county.