Parameter | All | EMS | HS | NPC | p value |
---|---|---|---|---|---|
Study participants (n) | 730 | 325 | 322 | 83 | N/A |
Risk exposure | |||||
Q1: Known contact to SARS-CoV-2 positive patient or suspected SARS-CoV-2 patient, n (%) | 473 (65) | 276 (85) | 197 (61) | N/A | 0.01# |
Q2: Unknown contact to SARS-CoV-2 positive patient, n (%) | 275 (38) | 178 (55) | 96 (30) | N/A | 0.01# |
Q3: In terms of unknown contact: PPE used was a surgical mask or unprotected, n (%) | 74 (27) | 15 (8) | 58 (60) | N/A | < 0.01# |
Awareness of symptoms and COVID-19 | |||||
Q4: Flu symptoms within last 10 months, n (%) | 360 (50) | 154 (47) | 169 (52) | 37 (44) | 0.31## |
Q5: Self assessment: Do you think you have been infected with SARS-CoV-2 or COVID-19, n (%) | 83 (16) | 61 (19) | 34 (10) | 8 (10) | 0.02## |
Seroprevalence SARS-CoV-2 ab or PCR§ | |||||
Sero + and PCR + , n | 6 | 2 | 3 | 1 | ND |
Sero + but PCR − , n | 3 | 1 | 1 | 1 | ND |
PCR + but Sero − , n | 4 | 1 | 3 | 0 | ND |
n positive/ n paticipants | 13/730 | 4/325 | 7/322 | 2/83 | ND |
SARS-CoV-2 incidence | |||||
Incidence, % | 1.8 | 1.2 | 2.2 | 2.4 | 0.58## |