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Responses to fitness survey questions, by time. The numbers in the bars represent the percentage of subjects who reported difficulty with exercise, daily activities (ie, walking or going up stairs), or physical fitness test score. Participants who never tested positive are included in the “never SARS-CoV-2+” group, and their answers are summarized over all surveys. Abbreviation: SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.
