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Sarah Glick, helps her son Harrison, 3, by swabbing his nose while getting tested for COVID-19 at the Curative testing van parked off Wightman Street in the Squirrel Hill neighborhood of Pittsburgh, Tuesday, Dec. 28, 2021. Ms. Glick said they were getting tested as a precaution before visiting her mother. (Alexandra Wimley/Pittsburgh Post-Gazette via AP)