Sohier C, Deblauwe I, Van Loo T, Hanon J-B, Cay A B, De Regge N
CODA-CERVA, Brussels, Belgium.
Institute for Tropical Medicine (ITM), Antwerp, Belgium.
Transbound Emerg Dis. 2017 Aug;64(4):1015-1019. doi: 10.1111/tbed.12655. Epub 2017 May 4.
A seroprevalence study carried out between June and September 2016 in the Belgian sheep population showed a significant increase in overall (from 25% to 62%) and between-herd (from 60% to 96%) seroprevalence against Schmallenberg virus (SBV) during this period, indicating the most extensive recirculation of SBV since its original emergence in 2011. SBV recirculation was confirmed by the detection of SBV RNA-positive Culicoides obsoletus complex midges collected in the region of Antwerp in August 2016, reaching a minimum infection rate of 3%. The recirculation of SBV in the largely unprotected ruminant population during summer 2016 will likely cause an increase in the number of arthrogryposis-hydranencephaly cases in newborn ruminants during the coming months.
2016年6月至9月在比利时绵羊群体中开展的一项血清阳性率研究表明，在此期间，针对施马伦贝格病毒（SBV）的总体血清阳性率（从25%升至62%）及群体间血清阳性率（从60%升至96%）均显著上升，这表明自2011年SBV首次出现以来，其传播范围最为广泛。2016年8月在安特卫普地区采集到的SBV RNA阳性的残缘库蚊复合体蠓虫证实了SBV的传播，最低感染率达3%。2016年夏季，在基本未受保护的反刍动物群体中SBV的传播可能会导致未来几个月新生反刍动物关节弯曲-积水性无脑畸形病例数量增加。
