Large-scale serological epidemiology survey shows that the population of our country is in the new crown low infection water

According to reports, the survey covered three types of areas, including Wuhan City, Wuhan City, Hubei Province, and six provinces outside Hubei (Beijing, Liaoning, Shanghai, Jiangsu, Guangdong and Sichuan), using a sample survey, selected a community population of more than 34,000 people, through the detection of the subjects of the serum new coronavirus antibodies, estimated the level of infection of the new coronavirus in the population.
investigation was carried out one month after China contained the first wave of neo-crown pneumonia by using cross-sectional investigation methods.
survey found that the positive rate of new crown antibodies in the community population in Wuhan area was 4.43%, the positive rate of antibodies in cities outside Wuhan, Hubei Province was 0.44%, and only 2 cases of antibody positive were detected among more than 12,000 people in six provinces outside Hubei Province, with a very low positive rate.
the antibody-positive rate of people who have been exposed to confirmed cases of neo-coronary pneumonia was significantly higher than that of other groups, and the antibody-positive rate of middle-aged and elderly groups was higher than that of other age groups.
that this survey is the first large-scale population-based new coronary serum antibody positive rate survey in different endemic areas.
is the difference between large-scale nucleic acid screening in the population that has been carried out in Wuhan? First of all, the purpose of the investigation is different, said experts from the China Center for Disease Control and Prevention.
serological epidemiology survey is designed to understand the past infection status of the new coronavirus in the population, where large-scale nucleic acid screening is designed to search for people who have been found to be infected with the virus.
, the detection method is different.
serum epidemiology survey is to detect the level of antibody of the new coronavirus in the serum, while mass nucleic acid screening in the population is the use of PCR method to detect the new coronavirus nucleic acid fragments.
third, the results mean different things.
The detection of specific antibodies (i.e. antibody-positive) in human serum indicates that they are previously infected, and if the nucleic acid results are negative, the virus has been removed from the body of the previously infected person and is not contagious.
if nucleic acid test positive, regardless of antibody test results, indicates that the individual may be in a toxic state, is a potential source of infection, prompting the need to isolate or treat it to prevent the spread of the virus.
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