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Over the last few years, the increase in the number of multi-resistant (MR) enterobacteria has become a major clinical problem. This study detects the occurrence and prevalence of Metallo betalactamase production among some clinical bacterial isolates in Murtala Muhammad Specialist Hospital, Kano and Al-Madina Specialist Hospital Kaduna, Nigeria. A total of 200 clinical isolates comprising of E. coli (83), Klebsiella pneumoniae (52), Pseusomonas aeruginosa (28) and Proteus mirabilis (37) were screened phenotypically for carbapenemase and specifically for Metallo betalactamase using Modified Hodges Test and EDTA Disc Synergy Test respectively. The result showed that 67(33.5%) of the isolates were found to produce carbapenemase. High production occurred in 24(35.8%) and low production occurred in 43(64.2%) of the isolates. Highest prevalence of carbapenemase was found in Pseudomonas aeruginosa (38.55%) followed by E. coli (34.8%), Proteus mirabilis. (29.1%) and least prevalence in Klebsiella pneumoniae (25.0%). The prevalence of MBLs in the study was 24.5% with highest prevalence in E. coli (31.32%) followed by Proteus mirabilis. (21.6%), Pseudomonas aeruginosa (21.2%) and least among Klebsiella pneumoniae. (14.3%). Most of carbapenemase producers produce MBL type. Urine samples were found to be with the highest prevalence of 38.3% when compared with ear swab (12.0%). Prevalence of 67.9% and 76.9% were recorded for Murtala Muhammad specialist hospital Kano and Al-madina hospital Kaduna respectively. This showed that carbapenemase-mediated resistance occurred in the selected hospitals and uncontrolled spread may lead to treatment failure and frustration. Keywords : Metallobetalactamase, Carbapenemase, Enterobacteriaceae, prevalence, Hospital

bayero journal of pure and applied sciences

Detection of metallo betalactamases among gram negative bacterial isolates from Murtala Muhammad Specialist Hospital, Kano and Almadina Hospital Kaduna, Nigeria