What are the two codes and four histories of COVID-19?

The two COVID-19 codes are the health code and the travel code, and the four histories are the contact history, travel history, travel history, and illness history.

One-code pass is a personal exclusive QR code based on personal health data, generated by personal declaration and comparison of background big data information. Every time a citizen scans the code, the health code will display personal identity information, such as ID number, name, nucleic acid test results; risk level information, such as red code for high risk, yellow code for medium risk, green code for low risk or No risk.

New Crown Epidemic Prevention and Control Measures:

1. Pay attention to holiday arrangements: reduce the flow of people, reduce travel risks, reduce crowd gatherings, and strengthen personal protection.

2. Pay attention when traveling: do not leave the country, do not get together, and do not go to medium- and high-risk areas.

3. Pay attention to shopping and entertainment: stay less when going out during off-peak hours, maintain a distance of one meter, and keep frozen food away from your hands.

4. When visiting relatives and friends, please pay attention: visit relatives and friends less often, do not hug or shake hands, and return as soon as possible when meeting.

5. Pay attention to dining out: Family gatherings should be reduced, and sharing meals with shared chopsticks should be encouraged.

Reference for the above content: Baidu Encyclopedia-New Coronavirus Pneumonia?fromtitle=New Crown Epidemic&fromid=55509470