“…Thus, Shigella fl exneri and much less frequently, Salmonella, enteropathogenic Escherichia coli and Yersinia were isolated from ~75-80% sick animals with severe diarrhea syndrome and monkeys dead from acute intestinal infections (AII) [3,4,8]. Similar results were obtained in the primatological institutions and foreign zoos, mainly in the USA, Japan, the Netherlands and others [7,11,12]. Since the mid-1980s, the ethological connection between pathogenic enterobacteria and AII tends to weaken against the background of high prevalence of these diseases and high mortality associated with them [9,10].…”