Martel J L, Contrepois M, Dubourguier H C, Girardeau J P, Gouet P, Bordas C, Hayers F, Quilleriet-Eliez A, Ramisse J, Sendral R
Ann Rech Vet. 1981;12(3):253-7.
During the winter of 1979-1980, an epizootiological study of diarrhoeic calves revealed the presence of K99+ E. coli among 8.2 p. cent of clinically healthy calves and in 18.9 p. cent of diseases calves. Some calves which seemed healthy on the day of sampling possibly became diarrhoeic on the following days. In diarrhoeic calves, K99+ E. coli were mainly found during the early life, i.e. in 33.7 p. cent of calves less than 4 days old. These results were obtained with 147 healthy calves and 1053 diarrhoeic calves. They confirmed previous results obtained with more limited numbers of animals. Moreover, K99+ E. coli were found in all breeding systems. Antibiotics resistance among the isolated E. coli were very high, especially in K99+ strains. The results proved the interest of E. coli K99 diagnosis in liquid diarrhoea of very young calves.
在1979 - 1980年冬季，一项针对腹泻犊牛的流行病学研究发现，在8.2%的临床健康犊牛和18.9%的患病犊牛中存在K99 +大肠杆菌。一些在采样当天看似健康的犊牛可能在随后几天出现腹泻。在腹泻犊牛中，K99 +大肠杆菌主要在早期发现，即在4日龄以下犊牛中的占比为33.7%。这些结果是对147头健康犊牛和1053头腹泻犊牛进行研究得出的。它们证实了之前对数量较少动物研究所得出的结果。此外，在所有养殖系统中都发现了K99 +大肠杆菌。分离出的大肠杆菌中的抗生素耐药性非常高，尤其是在K99 +菌株中。结果证明了对极幼小犊牛液体腹泻进行大肠杆菌K99诊断的意义。
