Postcontact follow-up results by the risk level
| Low risk n=295 (%) | Moderate risk n=284 (%) | High risk n=243 (%) | P value | |
| Presence of any symptom | 87a (29.5) | 120b (42.3) | 104b (42.8) | 0.001 |
| Throat ache | 51a (17.3) | 79b (27.8) | 69b (28.4) | 0.002 |
| Cough | 33 (11.2) | 41 (14.4) | 45 (18.5) | 0.055 |
| Diarrhoea | 8a (2.7) | 8a (2.8) | 18b (7.4) | 0.009 |
| Fever | 5a (1.7) | 8a (2.8) | 19b (7.8) | 0.001 |
| Shortness of breath | 11 (3.7) | 8 (2.8) | 10 (4.1) | 0.704 |
| Inability to taste/smell | 1 (0.3) | 1 (0.4) | 2 (0.8) | 0.089 |
| Duration to test after last risky exposure, days, median (min-max) | 5 (1–12) | 6 (1–18) | 5 (1–14) | 0.065 |
| SARS-CoV-2 RT-PCR positivity | 8 (4.5) | 7 (3.3) | 13 (7.1) | 0.205 |
| In asymptomatic HCW | 4 (3.7) | 1 (0.9) | 5 (6) | 0.191 |
| No of tests in asymptomatic HCW | 107 | 110 | 84 | |
| In symptomatic HCW | 4 (5.8) | 6 (5.9) | 8 (8.2) | 0.056 |
| No of tests in symptomatic HCW | 69 | 102 | 98 |
All data are given as a number (percentage) unless specifically stated.
a, b, c There is a difference between the groups indicated by different indices.
Bold values indicate statistical significance.
HCW, healthcare worker; RT-PCR, reverse transcriptase-polymerase chain reaction.