Table 1.
SARS-CoV-2 viral RNA copy numbers and free chlorine in the effluents of septic tanks of Wuchang Cabin Hospital. Disinfectants were added at 10 am every day into the septic tanks.
| Dates | Samples | SARS-CoV-2 (copies/L) | Free chlorine (mg/L)c |
|---|---|---|---|
| 26th February | Influent of septic tank | NDa (0/1)b | ND |
| Effluent of septic tank | (14.7 ± 2.2) × 103 (1/1) | ND | |
| 1st March | Influent of septic tank | ND (0/1) | ND |
| Effluent of septic tank | (7.5 ± 2.8) × 103 (6/6) | ND | |
| 10th March | Influent of septic tank | ND (0/2) | ND |
| Effluent of septic tank | ND (0/2) | 23.0 ± 2.0 |
a
ND, non-detected.
b
Fraction in bracket is number of positive samples to number of total samples.
c
Free chlorine in septic tank 12-h after sodium hypochlorite addition.