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  • Title: Shigellosis in Poland in 2018-2019.
    Author: Nowacka Z, Księżak E, Polański P, Sadkowska-Todys M.
    Journal: Przegl Epidemiol; 2022; 76(1):118-128. PubMed ID: 35861099.
    Abstract:
    AIM: The purpose of this study is evaluation of the epidemiological situation of shigellosis in Poland in years 2018-2019, comparing to previous years. MATERIALS AND METHODS: The evaluation of epidemiological situation of shigellosis in Poland was based on analysis of data from epidemiological surveillance collected in questionnaires and sent to the Department of Epidemiology of Infectious Diseases and Surveillance NIPH NIH-NRI by sanitary stations. Once a case was reported on a ZLK-1 and/or ZLB-1 form to the appropriate State Sanitary Inspector, an epidemiological investigation was conducted by collecting additional information from medical records and from the patient interview. Data from the "Infectious Diseases and Poisonings" bulletins years 2012-2019 was also used as well as data from shigellosis outbreaks acquired through ROE system - registry created for outbreak data gathering. RESULTS: In Poland in years 2018-2019 a total of 321 cases of shigellosis was reported. Incidence per 100,000 was 0.74 in 2018, which was considerably more than in previous years, and in 2019 was 0.10 - similarly as two years before. The most cases belonged to the 25-34 and 35-44 age groups, and the least cases to the 0-4 age group. Majority of them were women. Percentage of hospitalizations was 27% in described period. Regarding to previous years, in 2018 decrease of hospitalizations was noted. Imported cases were 54.8% of all with predominance of imports from Albania. Twenty eight percent of infections were caused by S. sonnei species. In discussed years 10 outbreaks were registered with 246 people ill, including two large outbreaks (77 and 150 cases). August was the month with the highest number of cases (217 cases, 67.6% of all), 62.2% of them were imported. CONCLUSIONS: Increase in number of cases and incidence of shigellosis in Poland in 2018 was caused by occurrence of two large epidemic outbreaks. Because of high percentage of imported cases, traveling to shigellosis endemic countries is currently the main risk factor for contracting the disease. This indicates the need for education for those who travel to endemic areas.
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