Shane S M, Gilbert R, Harrington K S
Department of Epidemiology and Community Health, School of Veterinary Medicine, Louisiana State University, Baton Rouge 70803.
Epidemiol Infect. 1990 Oct;105(2):307-16. doi: 10.1017/s0950268800047907.
An epidemiological survey was conducted on two commercial turtle farms in southern Louisiana to determine the reason for an apparent increase in the prevalence of Salmonella spp. in turtle hatchlings at the time of pre-export certification examination. Pond water was consistently found to be contaminated (6/36 samples) with either Salmonella newport, S. arizonae, or S. poona. Environmental specimens obtained from eggs and turtle hatcheries (204 specimens) failed to yield Salmonella spp. A sample comprising 197 hatchlings, derived from a batch previously demonstrated to be contaminated, showed a salmonella prevalence of 12%, with S. arizonae and S. poona the only serotypes isolated. Four serotypes of Salmonella sp. isolated by a certifying laboratory in 1988, and 20 salmonella isolates obtained from hatchling turtles, were all resistant to gentamicin. The emergence of gentamicin resistance in Salmonella spp. isolated from turtles will reduce the effectiveness of preventive measures in use in Louisiana since 1984.
在路易斯安那州南部的两家商业海龟养殖场进行了一项流行病学调查，以确定在出口前认证检查时海龟幼崽中沙门氏菌属患病率明显上升的原因。池塘水一直被发现受到新港沙门氏菌、亚利桑那沙门氏菌或普纳沙门氏菌的污染（36个样本中有6个）。从龟卵和海龟孵化场采集的环境样本（204个样本）未检测出沙门氏菌属。从一批先前证明已受污染的幼龟中抽取的197个样本显示，沙门氏菌患病率为12%，仅分离出亚利桑那沙门氏菌和普纳沙门氏菌这两种血清型。一家认证实验室在1988年分离出的四种沙门氏菌血清型，以及从海龟幼崽中获得的20株沙门氏菌分离株，均对庆大霉素耐药。从海龟中分离出的沙门氏菌属对庆大霉素产生耐药性，这将降低自1984年以来路易斯安那州所采用预防措施的有效性。
