Evidence of Ongoing Transmission of Zika Virus in Mérida, Mexico.
Am J Trop Med Hyg
; 110(4): 724-730, 2024 Apr 03.
Article
em En
| MEDLINE
| ID: mdl-38377614
ABSTRACT
Since the Zika virus (ZIKV) pandemic in 2015-2017, there has been a near absence of reported cases in the Americas outside of Brazil. However, the conditions for Aedes-borne transmission persist in Latin America, and the threat of ZIKV transmission is increasing as population immunity wanes. Mexico has reported only 70 cases of laboratory-confirmed ZIKV infection since 2020, with no cases recorded in the Yucatán peninsula. Here, we provide evidence of active ZIKV transmission, despite the absence of official case reports, in the city of Mérida, Mexico, the capital of the state of Yucatán. Capitalizing on an existing cohort, we detected cases in participants with symptoms consistent with flavivirus infection from 2021 to 2022. Serum samples from suspected cases were tested for ZIKV RNA by polymerase chain reaction or ZIKV-reactive IgM by ELISA. To provide more specific evidence of exposure, focus reduction neutralization tests were performed on ELISA-positive samples. Overall, we observed 25 suspected ZIKV infections for an estimated incidence of 2.8 symptomatic cases per 1,000 persons per year. Our findings emphasize the continuing threat of ZIKV transmission in the setting of decreased surveillance and reporting.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Aedes
/
Zika virus
/
Infecção por Zika virus
Limite:
Animals
/
Humans
País/Região como assunto:
Mexico
Idioma:
En
Revista:
Am J Trop Med Hyg
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Geórgia