Author: Martinez-Acuña, Natalia; Avalos-Nolazco, Diana Minerva; Rodriguez-Rodriguez, Diana Raquel; Martinez-Liu, Cynthia Gabriela; Galan-Huerta, Kame Alberto; Padilla-Rivas, Gerardo Raymundo; Ramos-Jimenez, Javier; Ayala-de-la-Cruz, Sergio; Cienfuegos-Pecina, Eduardo; Diaz-Chuc, Erik Alejandro; Cazares-Tamez, Rogelio; Flores-Arechiga, Amador; Perez-Chavez, Fernando; Arellanos-Soto, Daniel; Lozano-Sepulveda, Sonia Amelia; Garza-Gonzalez, Elvira; Treviño-Garza, Consuelo; Montes-de-Oca-Luna, Roberto; Lee-Gonzalez, Aurora Beatriz; de-la-O-Cavazos, Manuel Enrique; Rivas-Estilla, Ana Maria
Title: Seroprevalence of Anti-SARS-CoV-2 Antibodies in Blood Donors from Nuevo Leon State, Mexico, during 2020: A Retrospective Cross-Sectional Evaluation Cord-id: rfkyy1u5 Document date: 2021_6_24
ID: rfkyy1u5
Snippet: The progression and distribution of the SARS-CoV-2 pandemic are continuously changing over time and can be traced by blood donors’ serological survey. Here, we investigated the seroprevalence of anti-SARS-CoV-2 antibodies in blood donors in Nuevo Leon, Mexico during 2020 as a strategy for the rapid evaluation of the spread of SARS-CoV-2 and asymptomatic case detection. We collected residual plasma samples from blood donors who attended two regional donation centers from January to December of
Document: The progression and distribution of the SARS-CoV-2 pandemic are continuously changing over time and can be traced by blood donors’ serological survey. Here, we investigated the seroprevalence of anti-SARS-CoV-2 antibodies in blood donors in Nuevo Leon, Mexico during 2020 as a strategy for the rapid evaluation of the spread of SARS-CoV-2 and asymptomatic case detection. We collected residual plasma samples from blood donors who attended two regional donation centers from January to December of 2020 to identify changes in anti-SARS-CoV-2 IgG prevalence. Plasma samples were analyzed on the Abbott Architect instrument using the commercial Abbott SARS-CoV-2 IgG chemiluminescent assay. We found a total of 99 reactive samples from 2068 analyzed plasma samples, resulting in a raw prevalence of 4.87%. Donors aged 18–49 years were more likely to be seropositive compared to those aged >50 years (p < 0.001). Weekly seroprevalence increased from 1.8% during the early pandemic stage to 27.59% by the end of the year. Prevalence was 1.46-fold higher in females compared to males. Case geographical mapping showed that Monterrey city recorded the majority of SARS-CoV-2 cases. These results show that there is a growing trend of seroprevalence over time associated with asymptomatic infection that is unnoticed under the current epidemiological surveillance protocols.
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