DYNAMICS OF THE ETIOLOGICAL STRUCTURE OF SALMONELLOSIS IN BULGARIA AND SENSITIVITY TO ANTI‐BACTERIAL AGENTS FOR THE PERIOD 2016 – 2019

Background. In recent years, some features of salmonellosis have been noted: an increase in morbidity all around the world, which is accompanied by an increase in the number of isolated serotypes from humans, animals and food; an increase in sporadic diseases and multi-countries Salmonella outbreaks. Material and methods. For the period 2016 - 2019 in the National Reference Laboratory for Enteric Infections, Pathogenic Cocci and Diphtheria 2 696 Salmonella isolates from all over the country have been confirmed. All of the strains were epidemiologically and microbiologically examined, and  tested for antimicrobial resistance. Results. Salmonellosis is caused by several dominant for Bulgaria serotypes - is for S.Enteritidis and S.Typhimurium take the leading place, followed by Salmonella 1,2,5,12: i: -, Infantis, Paratyphi B Java, Kottbus, Corvallis, Derby, Dublin. Conclusions. Given the widespread transfer of Salmonella through the exchange of food and animals, and international tourism, the microbial landscape of salmonellosis is becoming more diverse, though the leadership of S. Enteritidis and S. Typhimurium has been maintained in the recent years, both worldwide and Bulgaria.