Thursday, March 26, 2020 19:03
As serological assays begin to identify people with presumed immunity to #COVID19 #SARSCoV2—the first who will restore our societies—understanding antibody response timing is critical. This study of 173 patients suggests ~15 days to robust IgM/IgG levels David R. Liu@davidrliu on Twitter
Pre-print here (pdf)
ResultsAmong 173 patients, the seroconversion rate for Ab, IgM and IgG was 93.1% (161/173), 82.7% (143/173) and 64.7% (112/173), respectively. Twelve patients who had not seroconverted were those only blood samples at the early stage of illness were collected. The seroconversion sequentially appeared for Ab, IgM and then IgG, with a median time of 11, 12 and 14 days, respectively. The presence of antibodies was ConclusionsThe antibody detection offers vital clinical information during the course of SARS-CoV2 infection. The findings provide strong empirical support for the routine application of serological testing in the diagnosis and management of COVID-19 patients.
Prof. Zheng Zhang, PhD, MD. Institute of Hepatology, Shenzhen 3rd People’s Hospital, Shenzhen 518112, Guangdong Province, China
Email: [email protected] Prof. Lei Liu, MD, Shenzhen 3rd People’s Hospital, Shenzhen 518112, Guangdong Province, China; Email: [email protected] Prof. Sheng-Xiang Ge, PhD, The State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen 361102, China; Phone: 86-0592-2184110; Fax: 86-0592-2181258; Email: [email protected] Prof. Jun Zhang, MSc, The State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen 361102, China; Phone: 86-0592-2184110; Fax: 86- 0592-2181258; Email: [email protected]
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