Seropositivity of SARS-CoV-2 in the Population of Kazakhstan: A Nationwide Laboratory-Based Surveillance
Semenova Y. Kalmatayeva Z. Oshibayeva A. Mamyrbekova S. Kudirbekova A. Nurbakyt A. Baizhaxynova A. Colet P. Glushkova N. Ivankov A. Sarria-Santamera A.
February-2 2022MDPI
International Journal of Environmental Research and Public Health
2022#19Issue 4
The data on seroprevalence of anti-SARS-CoV-2 antibodies in Kazakhstani population are non-existent, but are needed for planning of public health interventions targeted to COVID-19 containment. The aim of the study was to estimate the seropositivity of SARS-CoV-2 infection in the Kazakhstani population from 2020 to 2021. We relied on the data obtained from the results from “IN VITRO” laboratories of enzyme-linked immunosorbent assays for class G immunoglobulins (IgG) and class M (IgM) to SARS-CoV-2. The association of COVID-19 seropositivity was assessed in relation to age, gender, and region of residence. Additionally, we related the monitoring of longitudinal seropositivity with COVID-19 statistics obtained from Our World in Data. The total numbers of tests were 68,732 for SARS-CoV-2 IgM and 85,346 for IgG, of which 22% and 63% were positive, respectively. The highest rates of positive anti-SARS-CoV-2 IgM results were seen during July/August 2020. The rate of IgM seropositivity was the lowest on 25 October 2020 (2%). The lowest daily rate of anti-SARS-CoV-2 IgG was 17% (13 December 2020), while the peak of IgG seropositivity was seen on 6 June 2021 (84%). A longitudinal serological study should be envisaged to facilitate understanding of the dynamics of the epidemiological situation and to forecast future scenarios.
COVID-19 , Kazakhstan , Seropositivity , Surveillance
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Department of Neurology, Ophthalmology and Otolaryngology, Semey Medical University, Semey, 071400, Kazakhstan
School of Medicine, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Administrative Office, Khoja Akhmet Yassawi International Kazakh-Turkish University, Turkestan, 161204, Kazakhstan
Invitro-Kazakhstan Laboratory, Medical Department, Almaty, 050000, Kazakhstan
Department of Public Health, Asfendiyarov Kazakh National Medical University, Almaty, 050012, Kazakhstan
Department of Medicine, Nazarbayev University School of Medicine, Nur-Sultan, 020000, Kazakhstan
Independent Researcher, Almaty, 050000, Kazakhstan
Department of Neurology
School of Medicine
Administrative Office
Invitro-Kazakhstan Laboratory
Department of Public Health
Department of Medicine
Independent Researcher
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