Why do positive patients do a lot of nucleic acids at the time of time and space handover?

Frequent nucleic acid preparation can find some potential asymptomatic patients at the first time. Many patients have no symptoms before infection and the incubation period of the virus is very long. We can only find out that more asymptomatic infected people can protect more susceptible people from the root. The incubation period varies from person to person. Some people have a long incubation period, while others have a short prophase. Some people may not have so many viruses when they are infected for the first time, and then the testing institutions are not so developed. When testing for the first time, such a situation may not be detected, so it needs to be checked repeatedly. Otherwise, you don't know how strong it is, which may cause some unnecessary people to get infected. We all know that the method of nucleic acid detection is nasal test tube plus pharyngeal test tube, or nasal test plus pharyngeal test. In fact, there are some differences between these two detection methods. Repeated detection of nucleic acid also makes up for this difference in a sense and reduces the occurrence of false negatives. Although the process of nucleic acid testing is very painful, many people say that the nucleic acid testing in the city is directly scared, because putting a throat swab in your nose or throat is really a very uncomfortable process. Not only adults, but also the elderly and even children have to go through this process, and there is no way. The detection speed of nucleic acid is faster, the carriers of COVID-19 can be detected, and the transmission route can be quickly cut off. Giving more protection to susceptible people is therefore a necessary protective measure to prevent and control COVID-19, and an important measure for early detection, early reporting and early isolation. As we all know, protecting the COVID-19 epidemic is an important task now. As ordinary citizens, we must