Journal
INTERNATIONAL JOURNAL OF MICROBIOLOGY
Volume 2017, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2017/8486742
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- WSU
- Research Department WSU
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0 The increase in the incidence of extended-spectrum beta-lactamase- (ESBL-) producing Klebsiella species has become a serious problem worldwide, because of their incrimination in antibiotic resistance. The objective of this study is to investigate the resistance genes responsible for ESBL-producing Klebsiella species and carbapenemase-producing Klebsiella (CRE) isolated in Mthatha and to study their epidemiology. A prospective, descriptive study of 202 nonrepetitive samples from patients was obtained from Nelson Mandela Academic Hospital. The cultured Klebsiella isolates were subjected to antimicrobial susceptibility tests and the polymerase chain reaction of bla(CTX-M), bla(TEM), bla(SHV), bla(KPC), and bla(NDM) genes. Overall K. pneumoniae were the majority with 169 (83.7%) species isolates, followed by K. oxytoca with 29 (14.4%), while K. ozaenae and Raoultella ornithinolytica were 2 (0.9%) each. The prevalence of ESBL production in all Klebsiella species was 117 (57.9%). ESBL-genotypic resistance is driven in Mthatha by bla(SHV) 121 (77.1%) followed by bla(TEM) 105 (66.9%) and bla(CTX-M) at 89 (56.7%). The most common ESBL genotype combination among the Klebsiella was bla(TEM) + bla(SHV) + bla(CTX-M) at 79 (50.3%). There is a steady increase in the rate of ESBL genes in the last five years.
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