Table 3. Distribution of 20 positive environmental specimens among 9 COVID-19 cases.
| Characteristic | Total, n/N (%) |
|---|---|
| Total | 20/136 (14.7) |
| Toilet | 10/42 (23.8) |
| Toilet bowl | 5/17 (29.4) |
| Sink/Faucet/Shower | 4/22 (18.2) |
| Floor drain | 1/3 (33.3) |
| Anteroom | 4/21 (19.0) |
| Water dispenser/Cup/Bottle | 2/4 (50.0) |
| Chair/Table | 1/8 (12.5) |
| TV remote | 1/5 (20.0) |
| Others (TV Bench/Handrail) | 0/4 (0.0) |
| Kitchen | 1/8 (12.5) |
| Dining-table | 1/5 (20.0) |
| Cutting board/Bowl/Chopsticks | 0/2 (0.0) |
| Refrigerator | 0/1 (0.0) |
| Bedroom | 1/18 (5.6) |
| Bed/Sheet pillow/Bedside table | 1/6 (16.7) |
| Telephone/Computer/Mouse | 0/4 (0.0) |
| Clean Clothes/Hangers | 0/2 (0.0) |
| Others (Air conditioner/Fan) | 0/6 (0.0) |
| Door knob in room * | 3/14 (21.4) |
| Switch buttons in room * | 0/5 (0.0) |
| Air in room | 0/10 (0.0) |
| Outside room (Elevator/ Elevator buttons/Stair armrest) | 0/13 (0.0) |
| Car | 1/5 (20.0) |
| Steering wheel/Seat/Handlebar † | 1/4 (25.0) |
| Air in car | 0/1 (0.0) |
* Door knobs and switch buttons in room were not classified into specific room locations due to the specimens were collected with mixed form, where was commonly used by COVID-19 cases.
† Specimens in car (steering wheel, seat and handlebar) were mixed form.