Serological survey for research of covid-19 infections in the adult population of north pioneer, paraná-brazil

Introduction: The pandemic caused by COVID-19 affects millions of people in the worldwide and extensive testing makes it possible to intensify the physical isolation of infected people and to know the evolution of the virus transmission in the community. The objective of this research is to present the proportion of people with SARS-CoV-2 infection. Methods: A cross-sectional observational study was conducted in 14 municipalities in the pioneer north of Paraná, from June 11 to August 11, 2020. The sample consisted of 609 adult people. The independent variables were sociodemographic and epidemiological and the dependent variable was the presence of IgM and IgG antibodies against COVID-19. Data collection was performed through a questionnaire and analysis of capillary blood with a serological rapid test kit. Results: 527 volunteers came and took the test and 82 fouls or refusals. The average age of the participants was 36.9 years, 60.4% of the sample was composed of women and 39.6% by men. The presence of antibodies was detected in 45 participants, making up a percentage of 8.5% (95% CI 6.2%; 10.9%). Conclusion: there is still a significant portion of the population vulnerable to infection by the SARS-CoV-2 virus.