Serological evidence of continued Japanese encephalitis virus transmission in Singapore nearly three decades after end of pig farming.
Parasit Vectors
; 12(1): 244, 2019 May 17.
Article
em En
| MEDLINE
| ID: mdl-31101069
ABSTRACT
BACKGROUND:
Singapore used to report an annual average of 14 cases of Japanese encephalitis, but ever since the abolishment of pig farms in the early 1990s, the local incidence rate for Japanese encephalitis virus (JEV) infections has reduced drastically. Studies done in the early 2000s demonstrated the presence of JEV-specific antibodies in animals such as wild boars, dogs, chickens and goats on the offshore island and peripheral parts of the Singapore, indicative of prior JEV exposure. A JEV wildlife and sentinel chicken surveillance system was initiated in 2010 through to 2017 to study the animal host seroprofiles.RESULTS:
A total of 12/371 (3.23%) of resident bird samples, 24/254 (9.45%) of migratory bird samples and 10/66 (15.16%) of wild boar samples were positive for the presence of JEV antibodies. Seroconversions in sentinel chickens were observed at two time points. Through this study, two sites with active transmission of JEV amongst avian or porcine hosts were identified.CONCLUSIONS:
JEV transmission in animal hosts has continued despite the phasing out of pig farming nearly thirty years ago; however, the public health risk of transmission remains low. Environmental management for mosquito population remains key to keeping this risk low.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doenças dos Suínos
/
Encefalite Japonesa
/
Vigilância de Evento Sentinela
/
Anticorpos Antivirais
Tipo de estudo:
Prognostic_studies
Limite:
Animals
País/Região como assunto:
Asia
Idioma:
En
Revista:
Parasit Vectors
Ano de publicação:
2019
Tipo de documento:
Article