grosse Beilage E, Stockhofe-Zurwieden N, Schöttker-Wegner H H
Klinik für kleine Klauentiere und forensische Medizin, Tierärztlichen Hochschule Hannover.
Tierarztl Prax. 1992 Aug;20(4):381-4.
This article briefly describes the PRRS (Porcine Reproductive and Respiratory Syndrome), which arose in the winter of 1990 in Germany and other European countries. The data are accumulated from the literature and own experiences. The clinical picture of this new disease, which led to important economical losses is dominated by 1. an increased rate of reduced length of pregnancy with late abortion before day 110 or an increased length of pregnancy; 2. an increase of stillborn piglets; 3. a larger scale of preweaning mortality combined with a higher frequency of secondary infections. Pathological findings in piglets are subcutaneous edema, accumulation of fluids in the body cavities and sometimes interstitial pneumonia is observed. In sows originating from affected farms examined before partus a mononuclear placentitis is present. At present a non-classified virus, isolated by Dutch researchers is proposed to be the causative agent and named Lelystad virus.
本文简要描述了1990年冬季在德国及其他欧洲国家出现的猪繁殖与呼吸综合征（PRRS）。数据来源于文献及自身经验。这种导致重大经济损失的新疾病的临床症状主要表现为：1. 怀孕期缩短（110天前晚期流产）或怀孕期延长的发生率增加；2. 死胎仔猪数量增加；3. 断奶前死亡率上升且继发感染频率更高。仔猪的病理表现为皮下水肿、体腔积液，有时还可见间质性肺炎。在产前检查的来自受影响猪场的母猪中存在单核细胞性胎盘炎。目前，荷兰研究人员分离出的一种未分类病毒被认为是病原体，并命名为莱利斯塔德病毒。
