Surveillance of salmonellosis in the Varna region for the period 01.01–31.07.2024

Introduction: Non-typhoidal salmonella (NTS) is a foodborne zoonotic pathogen with significant implications for human health. Non-typhoidal salmonella infections continue to be a major global issue, representing the second most important zoonosis in the European Union (EU) and beyond. Aim: The aim of this article is to present the features of the epidemic process in NTS diseases in the Varna region and to evaluate the complex measures implemented to limit the spread of the infection and eliminate the epidemic focus. Materials and Methods: Official data from the Anti-Epidemic Control Department of the Regional Health Inspectorate (RHI) in Varna and data from the National Center for Infectious and Parasitic Diseases (NCIPD) were used. Microbiological and epidemiological analyses, among others, were conducted during the processing of the information. Results: From 01.01 to 31.07.2024, 169 cases were registered. For this period, these cases accounted for about 30% of NTS patients in the Republic of Bulgaria. Five outbreaks were located in kindergartens, involving 134 cases. The remaining 35 cases were sporadic. Conclusion: Following the isolation of all individuals who tested positive and the prompt and appropriate implementation of revised measures, the epidemic outbreaks in Varna were effectively limited and eliminated.