Table 1.
Demographics, SARS-CoV-2 PCR Results and Symptom Distribution Among Study Participants (n = 1109)
| Characteristic | Participants, No. (%) | ||||
|---|---|---|---|---|---|
| CHC | HCW | HCW Family | RTW | Negativesa | |
| Total | 134 (12.1) | 253 (22.8) | 299 (27.0) | 327 (29.5) | 96 (8.7) |
| Age(years) | |||||
| ȃ0–17 | 0 (0.0) | 0 (0.0) | 26 (8.7) | 0 (0.0) | 0 (0.0) |
| ȃ18–30 | 4 (3.0) | 45 (17.8) | 49 (16.4) | 85 (26.0) | 19 (19.8) |
| ȃ31–40 | 5 (3.7) | 69 (27.3) | 36 (12.0) | 103 (31.5) | 7 (7.3) |
| ȃ41–50 | 12 (9.0) | 59 (23.3) | 33 (11.0) | 52 (15.9) | 3 (3.1) |
| ȃ51–60 | 19 (14.2) | 32 (12.7) | 23 (7.7) | 66 (20.2) | 4 (4.2) |
| ȃ61–70 | 18 (13.4) | 13 (5.1) | 13 (4.3) | 18 (5.5) | 4 (4.2) |
| ȃ≥71 | 58 (43.3) | 0 (0.0) | 3 (1.0) | 2 (0.6) | 0 (0.0) |
| ȃMissing | 18 (13.4) | 35 (13.8) | 116 (38.8) | 1 (0.3) | 59 (61.5)b |
| Gender | |||||
| ȃMale | 64 (47.8) | 91 (36.0) | 87 (29.1) | 141 (43.1) | 30 (31.3) |
| ȃFemale | 52 (38.8) | 126 (49.8) | 100 (33.4) | 184 (56.3) | 27 (28.1) |
| ȃNon-binary | 0 (0.0) | 0 (0.0) | 1 (0.3) | 1 (0.3) | 0 (0.0) |
| ȃMissing | 18 (13.4) | 36 (14.2) | 111 (37.1) | 1 (0.3) | 39 (40.6) |
| Race | |||||
| ȃWhite | 81 (60.4) | 193 (76.3) | 162 (54.2) | 229 (70.0) | 51 (53.1) |
| ȃBlack | 10 (7.5) | 6 (2.4) | 2 (0.7) | 4 (1.2) | 3 (3.1) |
| ȃAsian | 4 (3.0) | 13 (5.1) | 13 (4.3) | 71 (21.7) | 3 (3.1) |
| ȃOther | 19 (14.2) | 2 (0.8) | 3 (1.0) | 18 (5.5) | 0 (0.0) |
| ȃMissing | 20 (14.9) | 39 (15.4) | 119 (39.8) | 5 (1.5) | 39 (40.6) |
| Ethnicity | |||||
| ȃHispanic | 20 (14.9) | 11 (4.4) | 5 (1.7) | 19 (5.8) | 5 (5.2) |
| ȃNon-Hispanic | 88 (65.7) | 203 (80.2) | 172 (57.5) | 304 (93.0) | 52 (54.2) |
| ȃMissing | 26 (19.4) | 39 (15.4) | 122 (40.8) | 4 (1.2) | 39 (40.6) |
| SARS-COV-2 PCR test result | |||||
| ȃPositive | 86 (64.2) | 84 (33.2) | 34 (11.4) | 8 (2.4) | NA |
| ȃNegative | 44 (32.8) | 135 (53.4) | 149 (49.8) | 318 (97.3) | NA |
| ȃMissing | 4 (3.1) | 34 (13.4) | 116 (38.8) | 1 (0.3) | NA |
| COVID-19 symptomsc | |||||
| ȃ≥1 | 134 (100.0) | 87 (34.4) | 80 (26.8) | 29 (8.9) | NA |
| ȃNone | 0 (0.0) | 105 (41.5) | 81 (27.1) | 1 (0.3) | NA |
| ȃMissing or NA | 0 (0.0) | 61 (24.1) | 138 (46.2) | 297 (90.8) | NA |
Abbreviations: CHCs, COVID-19 hospitalized case; COVID-19, coronavirus disease 2019; HCWs, healthcare workers; HCW Family, family members of enrolled HCWs; NA, not applicable. RTW, return-to-work employees who had been working remotely from March to August 2020, during the first COVID-19 wave in Worcester, Massachusetts; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.
SARS-CoV-2–negative samples: prepandemic and pre-screened SARS-CoV-2 negative samples.
Among these 59 participants who provided negative samples but were missing age-specific information, 17 were adults (aged ≥18 years), one was in his 20s, and two who were in their 30s, but with no exact ages available.
The RTW, HCW, and HCW Family members were asked to report symptoms only if they had a positive SARS-COV-2 test result or had reason to believe they were infected. The following COVID-19 symptoms were reported: cough, fever or chills, shortness of breath or difficulty breathing, loss of taste or smell, sore throat, headache, unexplained muscle or body aches, unusual weakness or fatigue, chilblains, and/or diarrhea.