Extended Data Fig. 1: Clinical correlates.

a, Summary of the characteristics of the cohort. Sx, symptoms. b, Age distribution for all men (n = 83) and women (n = 66) in the cohort. P = 0.2074. c, Duration of symptoms in days for all men (n = 83) and women (n = 66) in the cohort. P = 0.8704. d, Time between symptom onset and plasma collection for all men (n = 83) and women (n = 66) in the cohort. P = 0.5514. e, Subjective symptom severity on a scale of 0–10 for all men (n = 83) and women (n = 66) in the cohort. P = 0.1888. f, Age distribution for all cases (n = 111) and contacts (n = 38) in the cohort. P = 0.0305. g, Duration of symptoms in days for all cases (n = 111) and contacts (n = 38) in the cohort. P = 0.1241. h, Time between symptom onset and plasma collection in days for all cases (n = 111) and contacts (n = 38) in the cohort. P = 0.1589. i, Symptom severity for all cases (n = 111) and contacts (n = 38) in the cohort. P = 0.0550. j, Age distribution for all outpatient (n = 138) and hospitalized (n = 11) participants. P = 0.0024. k, Duration of symptoms in days for all outpatient (n = 138) and hospitalized (n = 11) participants in the cohort. P < 0.0001. l, Time between symptom onset and plasma collection in days for all outpatient (n = 138) and hospitalized (n = 11) participants in the cohort. P = 0.0001. m, Symptom severity for all outpatient (n = 138) and hospitalized (n = 11) participants in the cohort. P < 0.0001. Horizontal bars indicate median values. Statistical significance was determined using two-tailed Mann–Whitney U-tests.