Genus Staphylococcus microorganisms antibiotic resistance isolated from the Omsk region animals

The purpose of the study is to determine the antibiotic resistance of cultures of microorganisms isolated from animals. Tasks: isolation and determination of the species composition of microorganisms from clinical material obtained from animals from various areas of the Omsk Region, as well as the study of antibiotic resistance of etiologically significant cultures to a number of drugs. The material for the study was samples of clinical material obtained from animals from different geographical areas of the Omsk Region during 2021 (n=114). Samples were taken mainly from agricultural and small domestic animals. Microbiological studies were carried out on the basis of the Omsk Regional Veterinary Laboratory in the bacteriological department. During bacteriological studies of 114 samples, cultures of microorganisms of the genus Staphylococcus, Pseudomonas, Escherichia, Enterococcus, Proteus, Salmonella, Streptococcus, Entorobacter, Bacillus, Morganella, Citrobacter and Hafnia were isolated. It was revealed that the species diversity of microorganisms was dominated by the genus Staphylococcus (49 %), Salmonella - in 12 % of cases. Pseudomonas and Escherichia (8 %), Enterococcus and Proteus (6 %), Streptococcus (3 %), Entorobacter (2 %), Bacillus (2 %), Morganella (2 %), Citrobacter (1 %) and Hafnia (1 %). To determine antibiotic resistance, conditionally pathogenic cultures of staphylococci were selected, among which the species S. aureus was the leader (58.1 %), less often S. epidermidis (41.9 %). The resistance of microorganisms to antibacterial drugs was studied using the disk diffusion method. Most isolated cultures of staphylococci were found to be sensitive to gentamicin from the aminoglycoside group and cefuroxime, a second-generation cephalosporin. A significant part of the cultures of staphylococci showed resistance to tetracycline.