Bibliographic Details
| Title: |
Evolution of Zika prevalence in a dengue hyperendemic municipality in Southern Mexico after the outbreak of 2015 to 2017. |
| Authors: |
Gaspar-Castillo, Carlos1, Cortes-Escamilla, Anais2, Aparicio-Antonio, Rodrigo3, Carnalla, Martha4, López, Susana5, Sánchez-Tacuba, Liliana6, Oceguera-Cabrera, Alfonso7, Burrone, Oscar8, González-Bonilla, César9,10, Ortiz-Navarrete, Vianney11, Martínez-Barnetche, Jesús1, Henry Rodríguez, Mario1 mhenry@insp.mx, Alpuche-Aranda, Celia M.1 celia.alpuche@insp.mx |
| Source: |
Salud Pública de México. may/jun2024, Vol. 66 Issue 3, p218-225. 8p. |
| Subjects: |
DENGUE, FLAVIVIRUSES, TITERS, SEROPREVALENCE |
| Geographic Terms: |
MEXICO |
| Abstract (English): |
Objective. Estimate the Zika prevalence in a dengueendemic municipality in Mexico, after the outbreak of 2015 to 2017. Materials and methods. Three serosurveys were conducted in Tapachula, Chiapas, in September 2018, March 2019 and November 2019. A commercial ZIKV and DENV anti-NS1 IgG ELISA were used to estimate each prevalence, their performance and adjustment of the cut-off value were compared with an in-house DENVs and ZIKV anti-EDIII IgG ELISA and the microneutralization test. Results. The anti-NS1 ZIKV titers decreased over time, causing that Zika prevalence decreased from 78.02 to 45.22%, while anti-NS1 DENV titers increased, and the prevalence remained above 95% over a two-year period. Conclusion. Optimal Zikaprevalence estimates can be obtained in a two-years period after outbreaks in dengue-endemic areas. The extension of the Zika outbreak is significantly higher than previously reported in Tapachula, highlighting the underreport of cases based on the routine flavivirus surveillance system in Mexico. [ABSTRACT FROM AUTHOR] |
| Abstract (Spanish): |
Objetivo. Estimar la prevalencia de Zika en un municipio endémico de dengue en México, después del brote de 2015 a 2017. Material y métodos. Se realizaron tres encuestas serológicas seriadas en Tapachula, Chiapas, en septiembre 2018, marzo 2019 y noviembre 2019. Las ELISA comerciales de IgG anti-NS1 de DENV y ZIKV fueron utilizadas para estimar cada prevalencia; su desempeño y ajuste del valor de corte fueron comparadas con un ELISA casero de IgG anti-EDIII de DENV y ZIKV y la prueba de microneutralización. Resultados. Los títulos de anti-NS1 de ZIKV disminuyeron a lo largo del tiempo, haciendo que la prevalencia de Zika disminuyera de 78.02 a 45.22%; los títulos de IgG anti-NS1 de DENV incrementaron y la prevalencia permaneció por encima de 95% en un periodo de dos años. Conclusión. Estimaciones óptimas de la prevalencia de Zika pueden ser obtenidas en un periodo de dos años después del brote en un área endémica de dengue. La extensión del brote de Zika es significativamente más alta que la previamente reportada en Tapachula, Chiapas, resaltando el subreporte de casos basado en el sistema rutinario de vigilancia de flavivirus en México. [ABSTRACT FROM AUTHOR] |
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| Database: |
MedicLatina |
