Table 1.

Disinfection strategy for nursing homes when a COVID-19 case is found.

Category		Disinfection technology	Disinfectant concentration	Disinfection time
Clothes and bedclothes	Heat and humidity resistant	Boil	–	15 min
		Steam	–	30 min under 121 °C
		Pressure steam	–	30 min under 121 °C
		Wash after soaking in chlorine containing disinfectant	1000–2000 mg/L	2 h
	Heat and humidity sensitive	ethylene oxide disinfection cabinet	–	–
Contaminated objects	Heat and humidity resistant	Boil	–	15 min
		Steam	–	30 min under 121 °C
		Pressure steam	–	30 min under 121 °C
		Wash after soaking in chlorine containing disinfectant	1000–2000 mg/L	2 h
	Heat and humidity sensitive	ethylene oxide disinfection cabinet	–	–
	Humidity resistant	Soak in chlorine containing disinfectant or wipe the surface	1000–2000 mg/L	30 min
		Soak in peracetic acid or wipe the surface	2000 mg/L	30 min
	Precision instrument and electrical appliances	Wipe using alcohol or quaternary ammonium salt disinfectant
	Kitchen utensils	Boil		30 min
		Steam		30 min
		Wash after soaking in chlorine containing disinfectant	500 mg/L
Indoor environment	Surface	Spray disinfection (300 mL/m2)	1000–2000 mg/L (chlorine containing disinfectant); 2000–5000 mg/L (peracetic acid)
	Air	Fumigation (1 g/m2)	5000–10,000 mg/L (peracetic acid)	2 h under relative humidity of 60%–80%