What do you mean by 1 1 control?

"3+ 1 1" health management measures refer to family health monitoring for the first three days (every day 1 times of nucleic acid detection) and health monitoring after 1 1 day (the 4th, 5th, 7th and 4th days/respectively).

The incubation period of novel coronavirus is generally 1~ 14 days, mostly 3~7 days. According to experts' argumentation, it is an effective measure to strengthen control in the first three days when the risk of infection is high, strictly implement home health monitoring (every day 1 time nucleic acid detection), adhere to the requirements of 14 days health monitoring and corresponding nucleic acid detection, and implement the "four early" requirements in view of the current epidemic characteristics to curb the spread of the epidemic.

The specific measures of these figures are as follows:

14+7: 14 days of centralized isolation medical observation +7 days of home health observation.

3+ 1 1: 3-day family health observation+1 1 daily routine health monitoring.

2+ 14: check the negative proof of nucleic acid test within 2 days (48 hours) of daily health monitoring+14 days.

1+3 nucleic acid detection: nucleic acid detection was carried out on 1 day and the third day respectively, during which self-health monitoring was carried out.