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The aim: To obtain the first estimates data on the occurrence of antibiotic-resistant bacteria in a wide range of fresh vegetables available in the Kyiv city markets. Materials and methods: We performed a multicenter study. Fresh vegetables samples were collected of the six different commodity groups from eleven of retail stores locatedin Kyiv, Ukraine. Samples were tested for up to eight bacteria of concern. The susceptibility to antibiotics was determined by disk diffusion method according to the European Committee on Antimicrobial Susceptibility Testing. Results: The antibiotic-resistant bacteria contamination in the fresh vegetables was 24.3%. The contamination among organic produce was significantly higher than in conventionally products. Contamination was found to be higher in leafy vegetables. The predominant contaminated bacteria were: Escherichia coli, Enterobacter spp. And Enterococcus faecalis, followed by Klebsiella pneumoniae, Pseudomonas aeruginosa, E. faecium, Staphylococcus aureus and Acinetobacter spp. The overall proportion of extended spectrum beta-lactamase (ESBL) production among Enterobacteriaceae was 36.8% and of methicillin-resistance in S. aureus (MRSA) 10.7%. The prevalence of ESBL production among E. coli isolates was significantly higher than in K. pneumoniae. Vancomycin resistance was observed in 3.1% of isolated enterococci (VRE). Carbapenem resistance was identified in 35.3% of P.aeruginosa isolates and 66.8% of Acinetibacter spp. isolates. Resistance to third-generation cephalosporins was observed in 9.7% K. pneumoniae and E.coli in 14.2% isolates. Conclusions: Research has shown that the majority of fresh vegetables available in Kiev markets is contaminated with antibiotic-resistant bacteria and is a potential vehicle for the transmission of these pathogens to consumers.

Prevalence of methicillin-resistant AbstractObjective -to determine the prevalence of methicillin-resistant strains of Staphylococcus aureus, isolated from patients different departments in Kyiv Surgical Hospital.Materials and methods. Between June 2015 and December 2015, a total of 128 S. aureus isolates were collected from the pus samples of the patients with SSI in a surgical hospital in Kyiv, Ukraine. The identification and antimicrobial susceptibility of the cultures were determined, using automated microbiology analyzer VITEK 2 Compact (bioMerieux, France). Susceptibility to antibiotics was determined using VITEK 2 AST-P580 card (bioMerieux, France), which included 20 antibiotics (benzylpenicillin, oxacyllin, cefoxitin, gentamycin, tobramycin, levofloxacin, moxifloxacin, erythromycin, clindamycin, linezolid, teicoplanin, vancomycin, tetracycline, tigecycline, fosfomicin, nitrofurantoin, fusidic acid, mupirocin, rifampicin, and trimethoprim/ sulphamethoxazole) and a cefoxitin test, designed for detection of staphylococci resistance to methicillin. Interpretative criteria were those suggested by the Clinical and Laboratory Standards Institute (CLSI).Results and discussion. Based on antimicrobial susceptibility analysis, the most active antibiotics found in the study were linezolid, tigecycline, and mupirocin, showing growth inhibition of 100 % strains tested. Susceptibility to the other antimicrobials was also on a high level: 99 % of strains were found susceptible to nitrofurantoin and trimethoprim/sulphamethoxazole, 98 % -to fusidic acid, 97 % -to moxifloxacin, 96 % -to teicoplanin, 95 % -to vancomycin and fosfomicin, 93 % -to gentamycin, and 92 % -to tobramycin. Susceptibility to levofloxacin (89 %), tetracycline (88 %), rifampin (87 %), erythromycin (84 %), and clindamycin (79 %) was observed to be some lower. Research of MRSA prevalence in Kyiv Surgical Hospital (Ukraine) shown, that 11 % of staphylococci strains, isolated from patients having nosocomial infections (SSI), had multiple resistance to antibiotics. Resistance S. aureus to oxacyllin came up to 19 %. Further, 35.7 % of MRSA strains were resistant only to the group of beta-lactamic antibiotics, while the rest -also to the other classes of antibiotics.Conclusions. MRSA in surgical hospital, being a subject of the research is considered to be a serious therapeutic and epidemiologic problem. Total prevalence of MRSA in hospital was evaluated as 19 %, varying in every surgical department studied. Antibiotics revealed the most effective for treatment of MRSA infections were linezolid, mupirocin, tigecycline, vancomycine, teicoplanin, moxifloxacin, nitrofurantoin, fusidic acid, and trimethoprim/sulphamethoxazole. Taking into account the constant changes and significant differences of the S. aureus resistance levels observed in various regions, the constant monitoring of antibiotic resistance to antimicrobials in every in-patient medical institution is required and on the base of the local obtained results to elaborate the hospital record sheets. Ant...

BACKGROUND. Nasal carriage of Staphylococcus aureus among hospital personnel is a common cause of hospital acquired infections. Emergence of drug resistant strains especially methicillin resistant S. aureus (MRSA) is a serious problem in hospital environment. Therefore, the aim of this study was to determine the prevalence of nasal carriage of Staphylococcus aureus its antibiotic susceptibility among healthcare workers (HCWs) in Ukraine. METHODS. This cross-sectional study was conducted from January to December 2017. The study included medical workers from 19 hospitals in different Ukrainian regions. Nasal swabs were taken from 755 randomly selected HCWs. The mean age of participants was 32.41 ± 8.29 years (range 19-74 years) with a male-tofemale ratio of 0.47. The isolates were identified as S. aureus based on morphology, Gram stain, catalase test, coagulase test, and mannitol salt agar fermentation. The sensitivity patterns of S. aureus strains were determined by disk diffusion method (Kirby -Bauer). The panel of antibiotics used in sensitivity tests included: penicillin, oxacillin, cefoxitin, amoxicillin/clavulanic acid, gentamicin, tobramicin, ciprofloxacin, levofloxacin, moxifloxacin, mupirocin, nitrofurantoin, vancomycin, teicoplanin, fosfomycin, clindamycin, erythromycin, rifampicin, linezolid, tetracycline, tigecycline, trimethoprim/sulphamethoxazole, and fusidic acid. Interpretative criteria were those suggested by the CLSI (Clinical and Laboratory Standards Institute). MRSA were confirmed by detection of the mecA gene by polymerase chain reaction. RESULTS. Nasal screening identified 31.1 % (235/755) S. aureus carriers. Of the 235 nasal carriers of S. aureus, 83.4 % (196/755) carried MSSA (methicillin-sensitive S. aureus) and 39/755 (16.6 %) carried MRSA. The frequency of MRSA and MSSA carriage also varied according to the department/ward. The highest prevalence of nasal carriage of MRSA was in the surgical wards. The staff of the general, pediatric, cardiovascular, neuro and orthopedic surgery wards together with the emergency department accounted for 56.4 % of all MRSA carriers. There was no significant difference between the sexes (p = 0.247), age (p = 0.817), and years of healthcare service (p = 0.15) with regard to the nasal carriage of MRSA and MSSA. In univariate analysis we divided the hospital departments into: emergency, internal medicine, pediatrics, ICUs, surgery, and non-medical units and found no significant difference between MSSA and MRSA carriers (p = 0.224). In the multivariate analysis, the occupation «nurse» was independently associated with MRSA carriage (p = 0.012, odds ratio 3.6, 95 % confidence interval 1.3-9.7). All the S. aureus isolates recovered from nasal carriers, were susceptible to linezolid, tigecycline, vancomycin, teicoplanin, and mupirocin. Susceptibility to the other antimicrobials was also on a high level: 98.3 % of strains were found susceptible to trimethoprim/sulphamethoxazole, 96.2 % -to nitrofurantoin, 95.3 % -to fusidic acid, 92.3 % -to fosfomicin, 88....

Objective. To determine activity of antimicrobials against Enterobacter spp. isolated from patients hospitalized to surgical departments in different Ukrainian hospitals. Materials and methods. A total of 3991 Enterobacter spp. isolated from patients with surgical site infections in 24 surgical hospitals in 17 Ukrainian regions. The identification and antimicrobial susceptibility of Enterobacter spp. were determined, using automated microbiology analyzer. Some antimicrobial susceptibility test used Kirby - Bauer antibiotic testing. Interpretative criteria were those suggested by the Clinical and Laboratory Standards Institute (CLSI). Results. The most potent antimicrobials were imipenem, meropenem, cefixime and amikacinum. The high rates of resistance were found to penicillin (46,2%), ampicillin/sulbactam (42,9%), gentamicin (40,4%), ceftazidime (39,4%), ampicillin (38,2%), and cefuroxime (36,3%). Conclusions. (1) Resistance of nosocomial strains of Enterobacter spp. at in patient medical institutions, that are subject to research, is a serious therapeutic and epidemiologic issue. Imipenem, meropenem, cefixime and amikacinum have been the most active to nosocomial strains of Enterobacter spp. (2) Taking into account resent changes and resistance levels of nosocomial strains of Enterobacter spp., which take place in various regions, constant monitoring over resistance to antimicrobials at every in patient medical institution is required. Also, hospital record sheets of antibiotics should be elaborated based upon the local data received. (3) Antibiotics utilization policy in each surgical in patient institution should be determined based in accordance with the local data on resistance to antimicrobials. (4) System of epidemiologic surveillance over antimicrobial resistance should be established on the local, regional, and national level.