Title Prevalence of SARS-CoV-2-specific antibodies in a sample of the Lithuanian population-based study in Spring 2023 /
Authors Simanavičius, Martynas ; Kučinskaitė-Kodzė, Indrė ; Kaselienė, Snieguolė ; Sauliūnė, Skirmantė ; Gudas, Dainius ; Jančorienė, Ligita ; Jasinskienė, Rūta ; Vitkauskienė, Astra ; Žūtautienė, Rasa ; Žvirblienė, Aurelija ; Stankūnas, Mindaugas
DOI 10.1016/j.heliyon.2024.e29343
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Is Part of Heliyon.. Cambridge, MA : Cell Press. 2024, vol. 10, iss. 8, art. no. e29343, p. [1-11].. ISSN 2405-8440
Keywords [eng] COVID-19 ; SARS-CoV-2 ; Lithuania ; Anti-N IgG ; Seroprevalence
Abstract [eng] Objectives: Despite positive trends in SARS-CoV-2 epidemiology, seroprevalence surveys remain an important tool for estimating the magnitude of the COVID-19 pandemic. This study aimed to investigate the prevalence of IgG antibodies against SARS-CoV-2 nucleocapsid (N) and spike (S) proteins in a sample of the Lithuanian population (N = 517) and evaluate how the pattern of seropositivity correlates with the levels of SARS-CoV-2 infection and vaccination. Methods: Study participants (aged 18–88 years) filled in the questionnaire self-reporting their demographic-social variables, health status, and SARS-CoV-2-related status. The anti-S and anti-N IgG levels were estimated using a microarray ELISA test. Results: After several pandemic waves and vaccination campaign, the seroprevalence of SARSCoV- 2-specific IgG in the analyzed sample was 97.87 % by March–May 2023. We determined the 96.91 % prevalence of anti-S and 58.03 % prevalence of anti-N IgG. The majority of study participants (71.18 %) had hybrid immunity induced by vaccination and SARS-CoV-2 infection. 20.3 % of study participants were anti-N IgG positive without reporting any previous symptoms or a positive SARS-CoV-2 test. A decline of anti-N IgG positivity within 9 months after infection was observed. Conclusions: This study demonstrates high total seroprevalence in March–May 2023 in all age groups indicating a widely established humoral immunity against SARS-CoV-2 in Lithuania.
Published Cambridge, MA : Cell Press
Type Journal article
Language English
Publication date 2024
CC license CC license description