[Natural focal infections in the north of the Far East. I. The detection of natural foci of infections in Chukot].

Results of a 3-year complex (zoo-parasitological, viral, bacteriological, and serological) studies of mammals and birds in Chukotka demonstrated the presence of natural foci of pseudo-tuberculosis, intestinal yersinosis, salmonellosis (heidelberg), and of tick-borne encephalitis. The existence of natural foci of tularemia and endemic rickettsioses is supposed on the basis of serological data.