Seroprevalencia de la infección de SARS – CoV-2, un estudio transversal. Cuenca – Ecuador, octubre 2020

Objective: to establish the seroprevalence of SARS-CoV-2 infection in Cuenca canton and its demographic and socioeconomic distribution.Methodology: It is a cross-sectional study developed in Cuenca, It is based on a stratified randomized two-stage sampling with representation of all urban and rural parishes of the canton, with a total of 2457 participants. A survey was carried out for each household with sociodemographic and behavioral information, antibodies for SARS-CoV-2, IgM and IgG in blood were detected by acupressure.Results: a seroprevalence of 10% was estimated, (8.4% to 11.6%), with no statistically significant difference by sex and between the urban area as a whole vs. the whole of the rural area. The rural parishes Tarqui (38.8%), Checa (36.4%), have seroprevalences almost three times higher than the cantonal average. At a lower level of education, seroprevalence is higher, with a p value <0.001. Households with incomes below $ 200 have a higher prevalence of 12.99% (95% CI: 8.12-18.19), than households with incomes above $ 1500 with 4.74% (95% CI: 0.26-12.4).Conclusions: in Cuenca, one out of every 10 people has antibodies against SARS-CoV-2, the distribution of the disease shows differences in behavior by educational level, parish, income and work occupation