Home HOME Acta Virologica 2022 Acta Virologica Vol.66, No.3, p. 228 – 237, 2022

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Acta Virologica Vol.66, No.3, p. 228 – 237, 2022

Title: Seroprevalence of SARS-CoV-2 antibodies in the county town of Slovakia – a pilot study from the Trencin city
Author: Ivana Kajanova, Katarina Grossmannova, Lenka Jelenska, Lubomira Lukacikova, Zofia Radikova, Nikola Knutova, Jana Nahlikova, Martina Belisova, Silvia Pastorekova, Juraj Kopacek

Abstract: Slovakia is a country with only 5.45 million inhabitants. However, the past two years of the COVID-19 pandemic have shown huge inter-regional differences. These were represented by different numbers of diagnosed SARS-CoV-2 cases and the vaccination rates in the regions, as well as by the willingness of the inhabitants to comply with anti-pandemic measures or to undergo testing. The occurrence of such regional disparities provided a rational basis for monitoring the epidemic situation within smaller areas, e.g. at city level. Trencin is a medium-sized Slovak county town with about 55 000 inhabitants. The city administration gave its residents the opportunity to assess their current level of antibodies against the SARS-CoV-2 virus, and received an additional benefit in the form of data on the real epidemic situation in the city, which helped in further management of anti-pandemic measures. The primary aim of the study, conducted in January and February 2022, was to determine the levels of antibodies against the SARS-CoV-2 virus in the inhabitants of Trencin. The results showed that 75% of the study participants, representing the adult population of the city, had detectable IgG antibodies against the SARS-CoV-2 spike protein. Noteworthy, at the time of the study, 13% of the Trencin city population who were unaware of overcoming COVID-19 had specific antibodies against the virus. Furthermore, the antibody levels in recovered unvaccinated subjects increased not only with the severity of their COVID-19 symptoms, but also after multiple recoveries from the disease. On the other hand, the severity of side effects after vaccination did not influence the antibody levels. The results of the study are in line with the current view that hybrid immunity (vaccination plus SARS-CoV-2 infection in any order) offers greater protection than immunity elicited by vaccination or COVID-19 separately.

Keywords: SARS-CoV-2 coronavirus; COVID-19; ELISA; seroprevalence; antibodies; vaccination
Published online: 18-Jul-2022
Year: 2022, Volume: 66, Issue: 3 Page From: 228, Page To: 237

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