2026-07-17T20:31:51Zhttps://repisalud.isciii.es/rest/oai/request

oai:repisalud.isciii.es:20.500.12105/271852026-01-28T01:20:27Zcom_20.500.12105_2052com_20.500.12105_2051col_20.500.12105_19608

00925njm 22002777a 4500 dc Perez-Gomez, Beatriz author Pastor-Barriuso, Roberto author Fernandez de Larrea-Baz, Nerea author Hernán, Miguel A author Perez-Olmeda, Mayte author Oteo-Iglesias, Jesus author Fernandez-Navarro, Pablo L author Fernandez-Garcia, Aurora author Martín, Mariano author Cruz, Israel author Sanmartín, José L author Paniagua-Caparros, Jose Leon author Muñoz-Montalvo, Juan F author Blanco, Faustino author Yotti-Alvarez, Raquel author Pollan-Santamaria, Marina author 2023-05 Objectives. To describe participant characteristics associated with severe acute respiratory syndrome coronavirus 2 infection in Spain's first 2 COVID-19 waves per the Spanish National Seroepidemiological Survey of SARS-CoV-2 Infection (ENE-COVID). Methods. A representative cohort of the noninstitutionalized Spanish population, selected through stratified 2-stage sampling, answered a questionnaire and received point-of-care testing April to June 2020 (first wave: n = 68 287); previously seronegative participants repeated the questionnaire and test November 2020 (second wave: n = 44 451). We estimated seropositivity by wave and participant characteristics, accounting for sampling weights, nonresponse, and design effects. Results. We found that 6.0% (95% confidence interval [CI] = 5.7%, 6.4%) of Spain's population was infected by June and 3.8% (95% CI = 3.5%, 4.1%) more by November 2020. Both genders were equally affected. Seroprevalence decreased with age in adults 20 years and older in the second wave; socioeconomic differences increased. Health care workers were affected at 11.1% (95% CI = 9.0%, 13.6%) and 6.1% (95% CI = 4.4%, 8.5%) in the first and second waves, respectively. Living with an infected person increased infection risk to 22.1% (95% CI = 18.9%, 25.6%) in the first and 35.0% (95% CI = 30.8%, 39.4%) in the second wave. Conclusions. ENE-COVID characterized the first 2 pandemic waves, when information from surveillance systems was incomplete. (Am J Public Health. 2023;113(5):533-544. https://doi.org/10.2105/AJPH.2023.307233). Beatriz Pérez-Gómez, Roberto Pastor-Barriuso, Nerea Fernández-de-Larrea, Miguel A. Hernán, Mayte Pérez-Olmeda, Jesús Oteo-Iglesias, Pablo Fernández-Navarro, Aurora Fernández-García, Mariano Martín, Israel Cruz, José L. Sanmartín, José León-Paniagua, Juan F. Muñoz-Montalvo, Faustino Blanco, Raquel Yotti, and Marina Pollán: SARS-CoV-2 Infection During the First and Second Pandemic Waves in Spain: the ENE–COVID Study American Journal of Public Health 113, 533_544, https://doi.org/10.2105/AJPH.2023.307233. 10.2105/AJPH.2023.307233 American Journal of Public Health 36893370 https://hdl.handle.net/20.500.12105/27185 SARS-CoV-2 Infection During the First and Second Pandemic Waves in Spain: the ENE-COVID Study.