这至少是乔治亚大学寄生虫病学家雷?卡普兰在他最近发表的有关这一问题的研究综述中得出的结论。他发表在《兽医寄生虫学》上的文章读来让人心情沉重。
Sheep and goats are the worst affected. Studies in Australia, Brazil and the United Statessuggest that animals in half or more of farms in many parts of those countries are infestedwith drug-resistant worms. In some cases the parasites are resistant to every drug thatcan be thrown at them. The proportion of infested farms is lower in New Zealand, a countrythat has a huge population of sheep, but even there it is rising at a worrying rate.
绵羊与山羊受的影响最大。在澳大利亚、巴西和美国所做的研究表明,在这些国家的许多地区,一半或更多的农场中的家畜身上有耐药寄生虫。有些农场的寄生虫对所有可用药物有抗药性。新西兰的农场饲养着大量绵羊,它们受到影响的比例比较低;但即使在该国,受影响农场比例的增长速度还是令人担心。
Cattle, too, are afflicted. Dr Kaplan cites work done in Argentina, Brazil and New Zealand.And horses suffer as well, with resistant worms turning up in both America and Europe.
家牛也身受其害。卡普兰博士引用了在阿根廷、巴西和新西兰所做的研究工作。马也是受害者,美国与欧洲的马身上都发现了抗药寄生虫。
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