Molecular Epidemiology of Western Equine Encephalitis Virus, South America, 2023-2024.
Emerg Infect Dis
; 30(9): 1834-1840, 2024 Sep.
Article
en En
| MEDLINE
| ID: mdl-39173662
ABSTRACT
Western equine encephalitis virus (WEEV) is a mosquitoborne virus that reemerged in December 2023 in Argentina and Uruguay, causing a major outbreak. We investigated the outbreak using epidemiologic, entomological, and genomic analyses, focusing on WEEV circulation near the ArgentinaâUruguay border in Rio Grande do Sul state, Brazil. During November 2023âApril 2024, the outbreak in Argentina and Uruguay resulted in 217 human cases, 12 of which were fatal, and 2,548 equine cases. We determined cases on the basis of laboratory and clinical epidemiologic criteria. We characterized 3 fatal equine cases caused by a novel WEEV lineage identified through a nearly complete coding sequence analysis, which we propose as lineage C. Our findings highlight the importance of continued surveillance and equine vaccination to control future WEEV outbreaks in South America.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Filogenia
/
Brotes de Enfermedades
/
Epidemiología Molecular
/
Virus de la Encefalitis Equina del Oeste
Límite:
Adult
/
Animals
/
Female
/
Humans
/
Male
País/Región como asunto:
America do sul
/
Argentina
/
Uruguay
Idioma:
En
Revista:
Emerg Infect Dis
Asunto de la revista:
DOENCAS TRANSMISSIVEIS
Año:
2024
Tipo del documento:
Article
Pais de publicación:
Estados Unidos