Features of salmonellosis outbreak among employees of the Joint-Stock Company «Holding Company TEMPO»

Abstract

In recent years, salmonellosis has remained an urgent problem in the Russian Federation and in the Republic of Tatarstan. Annually from 2012 to 2022 in the Republic of Tatarstan, the proportion of cases of salmonellosis in the structure of the incidence of AKI is on average 6.3 % (in the Russian Federation — 4.9 %). In the ranking of the economic damage caused by infectious diseases in the republic, salmonella infection takes 11–14 places annually. Group foci of salmonellosis in the republic are registered sporadically, from 2013 to 2021. 8 group foci with the number of 96 people affected were registered. The article presents the results of the assessment of the epidemiological features of the outbreak of salmonella infection among employees of a large enterprise of the Joint-Stock Company «Holding Company «TEMPO» in Naberezhnye Chelny, Republic of Tatarstan in October 2022. The materials used are emergency notices for patients, an act of sanitary and epidemiological examination (investigation), an act of epidemiological investigation of the focus of an infectious (parasitic) disease with the establishment of a causal relationship, test reports. It was found that the number of cases was 254 people, all adults. The source of infection is the staff of the canteen of the enterprise, where the sick employees of the enterprise ate. The transfer factor was the use of raw cabbage, which was part of 3 salads, including cabbage salad, vinaigrette, cabbage with beans. The isolation of one type of the causative agent of salmonellosis from patients and from environmental objects is evidence of a link between cases of diseases and food contaminated with this pathogen. The well-established organization of operational interaction in the anti-epidemic work of infectious, epidemiological services and laboratory network in the system of sanitary-epidemiological service and health care allowed to establish a cause-and-effect relationship of the occurrence of group morbidity in the shortest possible time, to localize the focus within 7 days.