[en] Introduction:There are few reports assessing anti-SARS-CoV-2 seroprevalence in the migrant population in the world. These studies help to understand the exposure of populations to the virus to take actions to reduce the impact of SARS-CoV-2 infection. Objective:To determine the anti-SARS-CoV-2 seroprevalence in migrants with a vocation for permanence in Bucaramanga and to identify factors associated with previous SARS-CoV-2 infection. Methods:Analytical cross-sectional study using consecutive sampling, which included adult migrants in Bucaramanga in February 2021. Surveys were conducted, and chemiluminescent immunoassays were performed to detect IgM and IgG antibodies to SARS-CoV-2 in serum samples. Prevalence ratios (PR) were estimated using a log-binomial regression model. Results:The study enrolled 462 participants. IgM seroprevalence was 11.7% (95% CI 9.1-14.9), IgG seroprevalence was 32.9% (95% CI 28.8-37.3), and IgM or IgG seroprevalence was 36.1% (95% CI 31.9-40.6). Contact with a confirmed case of COVID-19 (PR:1.54; 95% CI 1.04-2.29) or suspected case (PR:1.56; 95% CI 1.13-2.16); living with six or more people (PR: 1.52; 95% CI 1.05-2.20); stay in Colombia > 2 years (PR:1.43; 95% CI 1.11-1.92), and presence of symptoms (PR:1.62; 95%CI 1.26-2.10) were some factors associated with higher IgG seroprevalence. Discussion:In Bucaramanga, SARS-CoV-2 seroprevalence among migrants was similar to the seroprevalences of migrants in Kuwait but lower than migrants in Paris and Singapore. Conclusions:The anti-SARS-CoV-2 seroprevalence among migrants with a vocation for permanence was similar to that reported among residents of Bucaramanga. Contact with suspected or confirmed COVID-19 cases and crowded conditions were some of the factors associated with seroprevalence.

[pt] Introdujo:Existem poucos relatos que avaliam a soroprevalencia contra SARS-CoV-2 na populagáo migrante no mundo. Esses estudos ajudam a conhecer a exposigáo ao virus nas populates para implementar agóes que reduzam o impacto da infecgáo por SARS-CoV-2. Objetivo:Determinar a soroprevalencia contra SARS CoV-2 em migrantes que pretendem permanecer em Bucaramanga e identificar fatores associados a infecgáo anterior por SARS-CoV-2. Métodos:Estudo analítico transversal com amostragem consecutiva. Foram incluídos migrantes adultos em Bucaramanga durante fevereiro/2021. Foram realizados levantamentos e imunoensaios de quimioluminescencia para IgM e IgG contra SARS-CoV-2 no soro. As razóes de prevalencia (RP) foram calculadas com regressáo log-binomial. Resultados:foram incluídos 462 participantes. A soroprevalencia de IgM foi de 11,7% (IC 95% 9,1-14,9), de IgG foi de 32,9% (IC 95% 28,8 37,3) e de IgM ou IgG foi de 36,1% (IC95% 31,9-40,6). Exposigáo a um caso confirmado (RP: 1,54; IC 95% 1,04-2,29) ou caso suspeito (RP: 1,56; IC 95% 1,13-2,16) de COVID-19, seis ou mais coabitantes (RP: 1,52; IC 95% 1,05 -2,20), permanencia na Colombia >2 anos (Rp: 1,43; IC 95% 1,11-1,92) e presenga de sintomas (RP: 1,62; IC95%1,26 - 2,10) foram associados a maior soroprevalencia de IgG. Discussao:Em Bucaramanga, a soroprevalencia em migrantes foi semelhante a de migrantes no Kuwait, mas menor do que em Paris e Cingapura. Conclusao:Em migrantes com vocagáo de permanencia, a soroprevalencia contra SARS-CoV-2 foi semelhante a relatada em residentes de Bucaramanga. O contato com casos suspeitos/confirmados de COVID-19 e as condigóes de superlotagáo foram alguns dos fatores associados a soroprevalencia.