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Reported return to health status on each study day among (A) high-risk and (B) standard-risk participants, and percentage of participants reporting presence of each of the 13 targeted symptoms among (C) high-risk and (D) standard-risk participants. C and D, Symptoms are ordered by ascending prevalence at day 0. Abbreviations: SOB, shortness of breath; diff, difficulty; obst/cong, obstruction/congestion.
