Table 1 Individual characteristics of PCR-positive SARS-CoV-2 cases and pre-pandemic controls.

CharacteristicPre-pandemic
Controls*
(N=1,548)
PCR-positive
Cases
(N=343)
Age
Median [IQR]37 [30–54]59 [45–71]
<65 years (%)1,386 (90)213 (62)
65+ years (%)162 (10)130 (38)
Female (%)1,024 (66)132 (38)
Race or ethnic group¥
White (%)NA125 (36)
Black or African American (%)NA34 (10)
Hispanic or Latino (%)NA121 (35)
Asian, American Indian, Alaska
Native or Other (%)
NA30 (9)
Immunosuppressed (%)NA26 (8)
Severity
Not Hospitalized (%)NA24 (7)
Hospitalized, no ICU (%)NA138 (40)
Hospitalized, required ICU (%)NA137 (40)
Died due to COVID-19 (%)NA43 (13)

*Pre-pandemic controls included healthy adults (n=274), patients undergoing routine serology testing (n=1241), and patients presenting with other known febrile illnesses (n = 33), including 13 with bacteremia (e.g., S. aureus, S. pneumoniae, E. coli, or K. pneumoniae confirmed by standard microbiologic techniques), 4 with babesiosis (confirmed by microscopy and/or PCR), 1 with presumed scrub typhus, and 15 with viral respiratory infections (e.g., influenza [7], parainfluenza [4], respiratory syncytial virus [3], and metapneumovirus [1] confirmed by PCR or direct fluorescent antibody test).

¥Data available for 310 cases.

Data available for 342 cases.