Isolation, anxiety, stress and the fear of contracting COVID-19 created barriers to treatment, according to addiction experts. Hard-hit communities across the U.S. hope to combat the rising number of fatal overdoses as the nation reached a morbid milestone in the drug epidemic: Drug overdose deaths soared to a record 93,000 in 2020, according to provisional data from the Centers for Disease Control and Prevention. That marks a 29.4% increase from 2019. In Allegheny County, Pennsylvania, home to Pittsburgh, the rate of overdose deaths noticeably surpassed Keystone State’s rate, which 16...