China Youth Daily client, Beijing, March 15th (China Youth Daily, China Youth Daily reporter Liu Changrong) The reporter learned from the press conference of the State Council’s joint prevention and control mechanism held this afternoon that the antigen test is for the nucleus of the new coronavirus. Capsid protein (N protein), this protein is characterized by a relatively high expression level and is more prone to mutation.
Li Jinming, deputy director of the National Health Commission’s Clinical Laboratory Center, said that there are three main groups of people applying antigen testing: one is people who go to primary medical institutions for treatment. Perform antigen testing. Relevant personnel who have a negative nucleic acid test can be quarantined at home and then tested for antigens for 5 consecutive days. “Why test for 5 consecutive days? If it is a new crown infection, there will be one day in the 5 days when the virus content is relatively high (will be detected); if it is continuously negative, no intervention is required.”
The second category of personnel are those who are under quarantine observation, including those under home quarantine observation and entry quarantine observation, those who are in close contact and sub-close contact with the spread of the epidemic, and those who stay at home in closed communities. These personnel tested the antigen for 5 consecutive days, once a day. If it is negative, no intervention is required, and another nucleic acid test will be performed until the isolation is released.
The third group of people are residents who want to do their own testing. If the person who is tested positive needs to do the nucleic acid test as soon as possible, and the negative person can test the antigen again when necessary at home.
Li Jinming emphasized, “If you have obvious clinical symptoms, you should go to the fever clinic, especially those who have fever and loss of taste and smell must go to the fever clinic. Loss of taste and smell is a very specific symptom of new crown infection.”