Skin and soft tissue inflammatory diseases of bacterial origin occupy a significant part of hospitalizations to emergency departments. One of the most common causes of sepsis is soft tissue infection, which accounts for about a quarter of all nosocomial infections. The aim of this study was to determine the differences in microbial landscape and antibiotic susceptibility of soft tissue infection pathogens among adults and children during the period 2018-2020. We studied 110 samples of pus admitted to the Scientific Research laboratory of the Karaganda Medical University from 2018 to 2020. Each sample was studied using the standard and express methods. The antibiotic susceptibility was determined by using the diffuse disk method in accordance with the CLSI 2018 recommendations. As such, 50% of S. epidermidis strains in children and 30% in adults were methicillin resistant. Differences in the resistance of S. aureus strains in children and adults were insignificant. Thus, methicillin-resistant S. aureus (MRSA) was not detected in children, but in adults, on the other hand, their percentage was 12.5%. The third cause of infection in adults was E. coli (13.72%), among which 75% were multidrug resistant. A. baumanii was found in 4.9% of adult patients' samples, of which 60% were multidrug resistant. The effectiveness of the most prescribed antibiotics decreased due to the isolated strain resistance.
Keywords: antibiotic resistance; antibiotic susceptibility; antibiotics; skin and soft tissue infection; soft tissue infection.