Kamhawi S, Hijjawi N, Abu-Gazaleh A, Abbass M
Department of Biological Sciences, Yarmouk University, Irbid, Jordan.
Ann Trop Med Parasitol. 1995 Dec;89(6):621-9. doi: 10.1080/00034983.1995.11812996.
When the prevalences of cystic echinococcosis in indigenous sheep, goats, cattle and camels from five regions of Jordan were investigated, from March to December 1992, they were found to be 12.9%, 12.7%, 0.9% and 11%, respectively. They were substantially higher in sheep from Karak (27.6%) and in cattle from central Jordan (18.0% in Amman and 14.3% in Sahab) than in the same animals in other regions. Age-intensity data indicated that the parasite population is endemic in sheep and cattle and hyperendemic in goats. Infection rate increased steadily with age in sheep, but became constant in goats and cattle when they were about 2 years of age. The most common locations of cysts were the liver in sheep and goats and the lungs in cattle. Co-infection of the liver and lungs was common in sheep and cattle. Although the majority of the sheep, cattle and goats had 1-10 cysts, 20.4% of the sheep and 22.2% of the cattle had 11-50 and 11-30 cysts, respectively. Although 38.1% of the cysts in sheep were fertile, only 8.7% of the cattle cysts and 4.5% of the goat cysts were in this condition. The overall mean number of protoscolices/sheep cyst was 2.7 x 10(3); although the liver cysts had more protoscolices than the lung cysts (3.2 x 10(3) v. 1.9 x 10(3)/cyst), more of the lung cysts were viable (71.1% v. 62.3%). Some 0.2% of 13,436 sheep and 6.1% of 786 cattle imported live into Jordan were infected with hydatid cysts; 16.3% of the sheep cysts (61.4% viable) and 9.6% of the cattle cysts (76.1% viable) were fertile.
1992年3月至12月，对约旦五个地区的本地绵羊、山羊、牛和骆驼的囊型包虫病患病率进行调查时，发现其患病率分别为12.9%、12.7%、0.9%和11%。卡拉克地区绵羊的患病率（27.6%）以及约旦中部地区牛的患病率（安曼为18.0%，萨哈卜为14.3%）显著高于其他地区的同类动物。年龄-感染强度数据表明，该寄生虫种群在绵羊和牛中为地方流行，在山羊中为高度流行。绵羊的感染率随年龄稳步上升，但山羊和牛在约2岁时感染率趋于稳定。囊肿最常见的部位在绵羊和山羊是肝脏，在牛是肺脏。绵羊和牛中肝脏和肺脏同时感染很常见。虽然大多数绵羊、牛和山羊有1 - 10个囊肿，但分别有20.4%的绵羊和22.2%的牛有11 - 50个和11 - 30个囊肿。虽然绵羊囊肿中有38.1%是有生殖力的，但牛囊肿中只有8.7%，山羊囊肿中只有4.5%是有生殖力的。每个绵羊囊肿中原头节的总体平均数为2.7×10³；虽然肝脏囊肿中的原头节比肺囊肿多（分别为3.2×10³个/囊肿和1.9×10³个/囊肿），但肺囊肿中有活力的更多（分别为71.1%和62.3%）。进口到约旦的13436只活绵羊中约0.2%以及786头牛中6.1%感染了包虫囊肿；绵羊囊肿中有16.3%（61.4%有活力）是有生殖力的，牛囊肿中有9.6%（76.1%有活力）是有生殖力的。
