The first results of the new coronavirus infection rate based on serum antibodies were published

In order to understand the cumulative prevalence of neo-coronavirus infection in China during the epidemic of neo-coronary pneumonia, and to accurately evaluate the infection status of new coronavirus, led by Hou Fanfan, a member of the Chinese Academy of Sciences and the National Center for Clinical Medicine of Kidney Disease in Southern Hospitals, jointly with research and medical institutions in Macao, Hong Kong, Hubei and other places, the infection rate of people affected by neo-coronavirus in different regions and different populations was assessed by detecting the level of neo-coronavirus-specific antibodies in serum. The study was published online June 5 in the journal Nature Medicine.
the study looked at 17,368 cases of serum-specific IgG and IgM antibody-positive rates in a total of 17,368 people in Hubei, Sichuan, Chongqing and Guangdong. The survey will be conducted from 9 March to 10 April 2020.
results showed that the serum antibody-positive rate was 3.8% in Wuhan, the center of the affected area, and the vast majority of antibody-positive subjects had no clinical symptoms. The lower the cumulative infection rate of the population in areas farther away from Wuhan. The cumulative sero-positive rate (2.5 per cent) of people who visited hospitals (e.g. outpatient and hemodialysis patients) or hospital work during the epidemic was significantly higher than that of the general community (0.8 per cent).
The new coronavirus is a new, highly contagious disease-caused virus, the human body exposure to the new virus, regardless of clinical symptoms, the immune system will respond accordingly, the generation of specific antibodies against the virus.
suggest that the antibody can be detected in the serum within 3 to 5 days of exposure to the virus, and that the antibody can persist for at least 28 days. Therefore, the detection of serum new coronavirus-specific antibodies can reflect whether the individual has recently been exposed to or infected with the new coronavirus, thus more accurately assessing the cumulative infection rate and prevalence of the new coronavirus.
, it should be noted that a serum fresh coronavirus-specific antibody positive does not mean that the subject now has new coronavirus pneumonia. It is also unclear whether the detected antibodies are protective.
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