Seroprevalence of SARS-CoV-2 infection, a cross sectional study. Cuenca – Ecuador, October 2020

Authors

  • Fausto David Acurio Páez Doctor en Medicina y Cirugía. Master en salud Familiar y Comunitaria. Universidad de Cuenca. Dirección de Vinculación con la Sociedad. Profesor titular de la carrera de Medicina. Cuenca-Azuay-Ecuador. https://orcid.org/0000-0003-3258-2837
  • Bernardo José Vega Crespo Doctor en Medicina y Cirugía. Magister en Investigación de la Salud. Universidad de Cuenca. Facultad de Ciencias Médicas. Docente de la carrera de Medicina (Ginecología y Obstetricia). Cuenca-Azuay-Ecuador. https://orcid.org/0000-0002-2545-4733
  • Daniel Augusto Orellana Vintimilla Biólogo. PhD (Doctor Exploring Pedestrian Movement Patterns). Profesor Principal de la Universidad de Cuenca. LlactaLAB - Ciudades Sustentables. Departamento Interdisciplinario de Espacio y Población. Cuenca-Azuay-Ecuador. https://orcid.org/0000-0001-8945-2035
  • Jos´´é Ricardo Charry Ramírez Doctor en Bioquímica y Farmacia. Magister en Investigación de la Salud. Universidad de Cuenca. Facultad de Ciencias Médicas. Docente de la carrera de Medicina (Bioestadística). Cuenca-Azuay-Ecuador. https://orcid.org/0000-0002-9009-2548
  • Andera Ximena Gómez Ayora Médica. Magíster en Salud Pública. Universidad de Chile. Facultad de Medicina. Escuela de Salud Pública. Cuenca-Azuay-Ecuador. https://orcid.org/0000-0002-0032-7607

DOI:

https://doi.org/10.18537/RFCM.39.01.01

Keywords:

seroepidemiologic studies, SARS virus, coronavirus infections, SARS-CoV-2, social class

Abstract

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.

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Published

2021-09-16