Syphilis seroprevalence and risk factors among first-time blood donors in Brazil: A comprehensive repeated cross-sectional analysis spanning a decade Article Swipe
André Lazzeri Cortez
,
Vivian Iida Avelino‐Silva
,
Bárbara Labella Henriques
,
Sebastián Vernal
,
Cesar de Almeida‐Neto
,
André Rolim Belisário
,
Paula Loureiro
,
Cláudia Máximo
,
Sheila de Oliveira Garcia Mateos
,
Philippe Mayaud
,
Éster Cerdeira Sabino
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1371/journal.pone.0315933
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1371/journal.pone.0315933
Background Syphilis remains a global health challenge, with rising incidence rates worldwide Prevalence surveys conducted in Brazil over extended periods of time are scarce. This study examines the secular trends and risk factors for syphilis seroprevalence among first-time blood donors in Brazil. Methods A retrospective analysis was conducted as part of a multicenter, repeated cross-sectional survey of blood donors from four major Brazilian blood centers, covering the period from 2007 to 2020. First-time donors who had undergone valid treponemal screening tests were included in the final dataset. Demographic characteristics and serological results were analyzed to identify risk factors for syphilis seroprevalence using multivariate Poisson models. An interaction term between age group and donation year was added to the final model. Model comparisons were performed using Likelihood Ratio Tests (LRT) and Akaike Information Criterion (AIC). Results 1,424,850 donations from first-time donors were included during the study period. The overall syphilis seroprevalence was 2.19%, with significant heterogeneity across centers. Risk factors for increased seroprevalence included male gender, older age, lower education level, and self-reported black or mixed skin color. Notably, an increasing trend in syphilis seroprevalence was observed among younger donors and those born after 1990. Interaction analyses revealed significant effects between visit period and key demographic variables (age group, gender, education, and ethnicity), with the interaction between age group and donation year indicating higher seroprevalence among younger age groups in recent years. Conclusion The study highlights a high syphilis seroprevalence among first-time blood donors in Brazil, which has significant implications for blood safety and public health. The increasing trend among younger donors suggests a shift towards newer infections, warranting continued surveillance in this demographic.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1371/journal.pone.0315933
- https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0315933&type=printable
- OA Status
- gold
- Cited By
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- References
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- Related Works
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- OpenAlex ID
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All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4407832348Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1371/journal.pone.0315933Digital Object Identifier
- Title
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Syphilis seroprevalence and risk factors among first-time blood donors in Brazil: A comprehensive repeated cross-sectional analysis spanning a decadeWork title
- Type
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articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2025Year of publication
- Publication date
-
2025-02-21Full publication date if available
- Authors
-
André Lazzeri Cortez, Vivian Iida Avelino‐Silva, Bárbara Labella Henriques, Sebastián Vernal, Cesar de Almeida‐Neto, André Rolim Belisário, Paula Loureiro, Cláudia Máximo, Sheila de Oliveira Garcia Mateos, Philippe Mayaud, Éster Cerdeira SabinoList of authors in order
- Landing page
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https://doi.org/10.1371/journal.pone.0315933Publisher landing page
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https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0315933&type=printableDirect link to full text PDF
- Open access
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YesWhether a free full text is available
- OA status
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goldOpen access status per OpenAlex
- OA URL
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https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0315933&type=printableDirect OA link when available
- Concepts
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Seroprevalence, Medicine, Demography, Syphilis, Cross-sectional study, Incidence (geometry), Serology, Environmental health, Immunology, Human immunodeficiency virus (HIV), Antibody, Physics, Optics, Sociology, PathologyTop concepts (fields/topics) attached by OpenAlex
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1Total citation count in OpenAlex
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2025: 1Per-year citation counts (last 5 years)
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20Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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