The virus has a certain incubation period. Because the virus has a certain incubation period, it is necessary to carry out multiple rounds of nucleic acid detection. The incubation period of COVID-19 can't be detected by antigen or nucleic acid, but it is also very dangerous in the incubation period, which will spread the virus, because the nucleic acid needs to be detected in time. Only in this way can the virus be found in the first time and the patients be isolated in time.
2. Antigen and nucleic acid have their own advantages. Antigen and nucleic acid detection have their own advantages. Nucleic acid detection requires professional medical staff to operate, which is relatively accurate. However, nucleic acid detection requires a large number of staff and personnel to queue up, and it takes a lot of manpower and time from accounting sampling to nucleic acid results. Compared with nucleic acid sampling, antigen detection is much more convenient, and people can complete it by themselves according to the instructions.
Third, there are many cases of infection in Shanghai. ? For the current situation in Shanghai, it is very necessary to carry out antigen detection and nucleic acid detection. This is because the number of infected people is large and the coverage is relatively large. In order to control the development of the epidemic, we can only carry out round after round of screening and sealing management, and screen out as many infected people as possible in a limited time. Only in this way can you control the development of the epidemic and ensure everyone's safety.