The Journal of the American Medical Association publishes the research results of Professor Liu Min's team from Peking University

The team of Professor Liu Min from the School of Public Health of Peking University recently published the "Proportion of Asymptomatic Infections in Global New Coronary Test Population and Confirmed Patients: A systematic review and Thesis of Meta-Analysis

Liu Min introduced that asymptomatic infections refer to those who have tested positive for nucleic acid, that is, those who have been infected with the new coronavirus but have not shown corresponding symptoms

In order to further confirm the proportion of asymptomatic infections of the new crown, Liu Min’s team conducted a large-scale retrospective study.

Figure 1 Flow chart of research literature screening

Through the analysis of these 95 papers, the research team found that a total of 29,776,306 people received nucleic acid testing, and 11,516 asymptomatic infections, accounting for 0.

To further analyze the proportion of asymptomatic infections among the infected, 18 of the 95 papers specialize in asymptomatic infections.

This large-scale statistical analysis showed that among the people tested, the proportion of asymptomatic infections was 0.

Figure 2 The proportion of asymptomatic infections in the test population (A) and the proportion of confirmed infections (B)

Liu Min said that this study shows that the proportion of asymptomatic infections among the confirmed patients of airline and cruise passengers is very high, exceeding 50%.

Liu Min emphasized that asymptomatic infections also carry the new coronavirus, and the viral load is equivalent to that of symptomatic infections, and because they are asymptomatic, they are often found later and the risk of transmission is greater