Table 1.

Risk adjusted precautions and control strategies of SARS-CoV-2 in operating public places.

Type	Public places	Risk level	Suggestion
Living service places	Shops, groceries, supermarkets, bars, restaurants, hotels	Low and medium	Operation management: reduce mass gatherings such as sales, adequate ventilation, health monitoring, set up the emergency area
			Social distancing: flow density control, mobile payment
			Cleaning and disinfection: regular clean and disinfect before open
			Personal protection: mask use, hand hygiene
		High	Shorten business hours except for above measures
Outdoor places	Flea markets, parks, beaches	Low and medium	Operation management: reduce mass gatherings, adequate ventilation, health monitoring, set up the emergency area
			Social distancing: flow density control, mobile payment
			Cleaning and disinfection: regular clean and disinfect object surfaces
			Personal protection: mask use, hand hygiene
		High	Shorten business hours except for above measures
Confined places	Elevators, restrooms	Low and medium	Operation management: health monitoring
			Social distancing: maintain social distance as far as possible
			Cleaning and disinfection: regularly clean and disinfect the surface of elevator keys, side walls, floors, etc.
			Personal protection: mask use, hand hygiene
		High	Increase the frequency of cleaning and disinfection 3 times to 6 times except for above measures