[Bluetongue virus serotype 8 in healthy young calves].
Following the detection in Northern Ireland of bluetongue serotype-8 (BTV-8) PCR-positive calves born from PCR-negative but seropositive heifers imported from the Netherlands, an investigation was started to determine whether PCR-positive calves were born in the first quarter of 2008 in the Netherlands. Blood samples were collected on 43 dairy farms from 388 cow-calf combinations. All calves were at least 10-days-old and had been born after 1 January 2008. In total, 229 cows had had a BTV-8 infection, and from these cows 37 PCR-positive calves were born (16.2%). If these calves are viraemic, they can contribute to BTV-8 overwintering in North-West Europe.
van Wuijckhuise
Linda
L
Gezondheidsdienst voor Dieren, Deventer. l.v.wuyckhuise@gddeventer.com
Vellema
Piet
P
Pelgrim
Wim
W
Tolboom
Ruben
R
Hans
Mulder
M
van Rijn
Piet
P
D000818:Animals; D000831:Animals, Newborn / Q000821:virology; D001819:Bluetongue / Q000453:epidemiology* / Q000635:transmission; D001820:Bluetongue virus / Q000145:classification / Q000302:isolation & purification*; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000635:transmission / Q000821:virology; D004197:Disease Reservoirs / Q000662:veterinary; D005260:Female; D018445:Infectious Disease Transmission, Vertical / Q000662:veterinary*; D008297:Male; D009426:Netherlands / Q000453:epidemiology; D009660:Northern Ireland / Q000453:epidemiology; D010802:Phylogeny; D016133:Polymerase Chain Reaction / Q000379:methods / Q000662:veterinary*; D011247:Pregnancy; D012703:Serotyping / Q000662:veterinary; D012756:Sheep