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IMAGE: Figure 1. The total IgG and IgM antibody positive rate of SARS-CoV-2 in Hubei Province and other provinces with sample size >300 persons in mainland China.
Asymptomatic carriers of SARS-CoV-2. view more
Credit: Duan S, et al. (2021) (CC-BY 2.0)
Wuhan City in China was the first place to report COVID-19 in the world and between December 2019 and May 2020 caused nearly two-thirds of all COVID-19 cases in China. Now, researchers reporting in
PLOS Neglected Tropical Diseases have tested more than 60,000 healthy individuals in China for SARS-CoV-2 antibodies and concluded that thousands of Wuhan residents were infected with asymptomatic cases of COVID-19 after the infection was believed to be under control in China.