Henan Xinxiang: Nucleic acid testing is an important means of prevention and control of epidemic conditions

It has been a while in the city's continued nucleic acid testing. Many citizens have had many questions. Is there necessary for repeated nucleic acid testing? Why repeated screening? On August 22, experts from the nucleic acid testing team of the Municipal Epidemic Prevention and Control Command explained the reason.

Recently, the local epidemic in my country has shown multiple exfoliating and frequent excess trends. The overflow of the epidemic in some regions has not been completely blocked, and the situation of preventing and controlling the situation is severe and complicated. It is necessary to repeat multiple testing. Nucleic acid testing is a very effective and important means in the current epidemic prevention and control.

There are three main reasons for high frequency and repetitive testing:

First, in terms of clinical diseases and development rules, any disease primary infection has a certain incubation period, the new coronary virus is no exception, and there are certain individual differences in the duration of the incubation period.

Second, from the test technology, there is the concept of the detection window period. After the virus infection, there is a growth and replication process in the body. The virus load in the early stage of the infection is too low, which is lower than the lower limit of the detection. The positive cannot be found. This time period is the detection window period. The above -mentioned infection incubation period+detection window period makes it not necessarily the positive results in the early stage of the infection. Repeated detection can increase the chance of positive discovery and discover positive in time.

Third, due to the sampling of the respiratory pathogen, the samples of the respiratory paths are mainly in the form of pharynx, nasal swab, nose+pharynx, and the sampling process inevitably has certain sampling differences. This difference includes the sampling site, depth, and the amount of secretions collected.

Therefore, repeated multiple sampling detections can make up for the pseudoma -negative effects that may bring in the sampling error.

Nucleic acid testing is an important means of preventing and controlling the prevention and control of the infection of the new crown virus. It is the first line of defense to implement early discovery, early reports, early isolation, and early treatment. Through crowd nucleic acid testing, cases can be found as soon as possible, especially those with asymptomatic infections, to find out and lock risk areas and key groups, and take targeted control measures in a timely manner to block the spread of the epidemic.

The role of nucleic acid testing in the prevention and control of the epidemic is self -evident. In the future, it will also be one of the important normalization epidemic prevention and control methods. Actively cooperate with nucleic acid testing regulations and insist on inspections. It is not only a key chain that controls the spread of epidemic and ensure the orderly operation of the entire society. It is also the consciousness and actions that each citizen deserves.

Xinxiang Daily All Media Reporter Li Wenqi

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