Positive tests for SARS-CoV-2 RNA*
| Surgical service; no. of cases | Peritoneal fluid† | Vaginal fluid† | Myometrial swab† | Placenta swab† (fetal side) | Surgical instruments† | ETT† | Petri dish UTM (passive air sampling)† | Floor swab‡ |
|---|---|---|---|---|---|---|---|---|
| Obstetrics, n = 9 | 1/5 | 1/7 | 1/4 | 1/7 | – | 1/1 | – | 0/14 |
| Gynecologic oncology, n = 2 | – | NA | NA | NA | 1/1 | 1/2 | – | 1/4 |
| Orthopedics or trauma, n = 7 | NA | NA | NA | NA | 0/5 | 1/1 | 0/4 | 1/14 |
| General surgery, n = 2 | 0/1 | NA | NA | NA | – | 0/1 | – | 0/4 |
| Tracheostomy, n = 4 | NA | NA | NA | NA | 0/1 | 3/4 | 0/1 | 2/8 |
| Gastroenterology, n = 1 | NA | NA | NA | NA | 1/1 | – | 0/1 | 0/2 |
| Burn or plastic surgery, n = 3 | NA | NA | NA | NA | 0/2 | 2/2 | 1/1 | 1/8 |
| Cardiac or vascular surgery, n = 2 | NA | NA | NA | NA | 0/1 | 0/1 | – | 0/4 |
| Neurosurgery, n = 1 | NA | NA | NA | NA | – | – | – | 0/2 |
| Total: 32 patients | 1/6 | 1/7 | 1/4 | 1/7 | 2/11 | 8/12 | 1/7 | 5/60 |
Note: ETT = endotracheal tube, NA = not applicable, UTM = universal transport medium, – = (empty cell), sample was either not taken or patient consent was not possible.
↵* See Appendix 4 (available at www.cmajopen.ca/content/10/2/E450/suppl/DC1) for all results of tests that include cautery filters, active air sampling and face masks.
↵† Number of positive tests/number of cases sampled.
↵‡ Number of positive tests/number of tests performed (e.g., 1–2 tests per surgical or obstetric case).