Table 3. Studies sample collection characteristics.
| Study ID | Frequency of
sample collection |
Timing of sample collection |
|---|---|---|
| Abrahão 2020 | Not specified | Not specified |
| Akter 2020 | NA | N/A |
| Amoah 2020 | Twice | Unspecified |
| Ben-Shmuel 2020 | Not specified | Not specified |
| Bloise 2020 | Not specified | Not specified |
| Cheng 2020 | Not specified | Not specified |
| Cheng 2020a | Once | Before daily disinfection |
| Chia 2020 | Not specified | Not specified |
| Colaneri 2020 | Not specified | Not specified |
| Colaneri 2020a | Once | After disinfection |
| D'Accolti 2020 | Not specified | After disinfection |
| Declementi 2020 | Twice | After disinfection |
| Ding 2020 | Not specified | Before disinfection |
| Döhla 2020 | Not specified | Not specified |
| Escudero 2020 | Not specified | Not specified |
| Feng 2020 | Not specified | Not specified |
| Fernández-de-Mera 2020 | Not specified | Not specified |
| Ge 2020 | 1 to 3 times | Not specified |
| Guo 2020 | Not specified | Not specified |
| Harvey 2020 | Twice: Pilot phase
and full-scale phase |
N/A |
| Hu 2020 | Not specified | Not specified |
| Hu 2020a | 3 times | 4 h after case confirmation |
| Jerry 2020 | Not specified | 4 h after disinfection |
| Jiang 2020 | Not specified | Not specified |
| Jiang 2020a | Not specified | Before disinfection |
| Jin 2020 | Not specified | 2 h after disinfection |
| Kim 2020 | Not specified | Not specified |
| Lee 2020 | Not specified | After disinfection (hospital)
Before disinfection (mass facilities) |
| Lei 2020 | Twice | Before disinfection |
| Lui 2020 | N/A | N/A |
| Lv 2020 | Not specified | Not specified |
| Ma 2020 | Not specified | Not specified |
| Maestre 2020 | Not specified | Not specified |
| Marshall 2020 | End of work shift | Before disinfection |
| Moore 2020 | Not specified | Not specified |
| Nakamura 2020 | Not specified | After disinfection |
| Nelson 2020 | Not specified | Not specified |
| Ong 2020 | 5 separate time
points |
Before disinfection |
| Ong 2020a | 5 days over a
2-week period |
Before and after (33.3%:66.7%) |
| Ong 2020b | Not specified | Not specified |
| Pasquarella 2020 | Once | After disinfection |
| Peyrony 2020 | Not specified | Not specified |
| Piana 2020 | Not specified | Before disinfection |
| Razzini 2020 | Not specified | Before disinfection |
| Ryu 2020 | Not specified | Not specified |
| Santarpia 2020 | Not specified | Not specified |
| Seyedmehdi 2020 | Not specified | Not specified |
| Shin 2020 | Twice daily | After disinfection (4 days) |
| Suzuki 2020 | Not specified | Before disinfection |
| Wang 2020 | Not specified | Not specified |
| Wang 2020a | Not specified | Not specified |
| Wee 2020 | Not specified | Before disinfection |
| Wei 2020 | Not specified | After disinfection |
| Wei 2020a | Not specified | Before disinfection |
| Wong 2020 | Not specified | Before and after (50%:50%) |
| Wu 2020 | Not specified | Before disinfection |
| Ye 2020 | Three sets over a
20-day period |
Not specified |
| Yuan 2020 | Not specified | After disinfection |
| Yung 2020 | Not specified | Not specified |
| Zhang 2020 | Not specified | Not specified |
| Zhou 2020 | Not specified | Not specified |
| Zhou 2020a | Not specified | Not specified |
| Zuckerman 2020 | Not specified | Before disinfection |