RESUMEN
This study reports the prevalence of duck hepatitis A virus (DHAV) types 1 and 3 on Korean duck farms. By RT-nested PCR assays specific for DHAV-1 or DHAV-3, DHAV-1 was detected in 9 of 157 liver samples (5.7 %) from 2 of 30 farms (6.7 %), and DHAV-3 was positive in 104 of 157 liver samples (66.2 %) from 23 of 30 farms (76.7 %). Dual infections with DHAV-1 and DHAV-3 were detected in 23 of 157 samples (14.6 %) from 5 of 30 farms (16.7 %). The data indicate that DHAV-3 infections are prevalent and that DHAV-1 reemerged in Korea, resulting in dual infections on several farms. Our data will help to establish a vaccination policy against DHAV-1 and DHAV-3 in Korea.
Asunto(s)
Patos/virología , Virus de la Hepatitis del Pato/clasificación , Hepatitis Viral Animal/epidemiología , Infecciones por Picornaviridae/epidemiología , Secuencia de Aminoácidos , Animales , Secuencia de Bases , Virus de la Hepatitis del Pato/genética , Virus de la Hepatitis del Pato/aislamiento & purificación , Hepatitis Viral Animal/inmunología , Hepatitis Viral Animal/prevención & control , Infecciones por Picornaviridae/inmunología , Infecciones por Picornaviridae/prevención & control , ARN Viral/genética , República de Corea/epidemiología , Análisis de Secuencia de ARN , VacunaciónRESUMEN
Culicoides biting midges were collected on three cattle farms weekly using light traps overnight from May to October between 2010 and 2011 in the southern part of Korea. The seasonal and geographical abundance of Culicodes spp. were measured. A total of 16,538 biting midges were collected from 2010 to 2011, including seven species of Culicoides, four of which represented 98.42% of the collected specimens. These four species were Culicodes (C.) punctatus (n = 14,413), C. arakawae (n = 1,120), C. oxystoma (n = 427), and C. maculatus (n = 318). C. punctatus was the predominant species (87.15%).