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Three-month rates of testing via SPTs and serum-specific IgE tests for 668 patients who had an index visit between January 1, 2017, and June 30, 2022, and underwent testing at the visit or up to 90 days after. Rates of testing represent ratios of the number of patients tested to the number of index visits within each 3-month period. The Black dotted line represents 3-month period during which COVID-19 lockdown in Philadelphia occurred.
