How long can the nucleic acid brush registration code remain valid for Shanghai Weather Epidemic Prevention and Control?

Within seven days.

The validity period of negative nucleic acid test results is set within 7 days. The shorter the ideal validity period of a negative nucleic acid test result is, the safer it is. But if it is too short, frequent detection is required, making it difficult to operate in reality. The validity period is set within 7 days, mainly based on the incubation period of the new coronavirus. The incubation period of COVID-19 is usually between 3 and 7 days. Some people have less than 3 days, some have more than 7 days, and the longest incubation period is 14 days. Therefore, 14 days is set as the observation period for close contacts.

Notes on nucleic acid testing

1. Nucleic acid testing appointments are for people who have no symptoms such as fever and no epidemiological history and voluntarily accept nucleic acid testing. If you have symptoms such as fever, cough, sore throat, etc., please go to the fever clinic for screening in time.

2. For your own safety, please make reservations on demand, make reservations at staggered times, wear masks, and avoid gathering in groups to avoid cross-infection.

3. Please bring your ID card and social security card to see a doctor, cooperate with the hospital’s pre-examination and triage work, scan the “health code” and truthfully declare your personal health status; please wear a mask throughout the treatment and maintain a one-meter social distance .

4. Nucleic acid collection does not require fasting. Do not smoke, drink, or chew gum within 2 hours before sampling. For those with sensitive throats, it is recommended not to eat two hours before sampling to avoid nausea when collecting throat swabs. Vomit.