Incidence of antibiotic resistant bacteria in drinking water in Cairo

El-Zanfaly, Helmy T.; Kassim, El-Saied Abd-Aziz; Badr-Eldin, Samir M.

doi:10.1007/bf00227688

Cited by 9 publications

(3 citation statements)

References 6 publications

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“…Reasoner et al (41) detected high populations of pigmented bacteria, including members of the genera Chromobacterium, Flavobacterium, and Serratia, and of gram-positive organisms from potable water. Other investigators isolated similar species of aerobic chemoheterotrophs from drinking water (2,8,23) and also found a large number of antibiotic-resistant strains among the bacteria detected (2,8). These observations suggest that a wide variety of bacterial species have the potential to resist chlorine or to survive under chlorinated conditions.…”

Section: Discussionmentioning

confidence: 62%

“…In Japan, therefore, the frequent occurrence and colonization of these bacteria in potable water systems have in recent years received much attention as a potential public health hazard. Nevertheless, while many species of aerobic chemoheterotrophic bacteria have been isolated from drinking water systems and other chlorinated environments throughout the world (8,36,37,41,42), little attention has been paid to the incidence, taxonomic identity, and chlorine resistance capacity of Methylobacterium strains possibly predominating in those environments.…”

mentioning

confidence: 99%

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Phenotypic and genetic diversity of chlorine-resistant Methylobacterium strains isolated from various environments

Hiraishi

Furuhata

Matsumoto

et al. 1995

Appl Environ Microbiol

124

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Strains of pink-pigmented facultative methylotrophs which were isolated previously from various environments and assigned tentatively to the genus Methylobacterium were characterized in comparison with authentic strains of previously known species of this genus. Most of the isolates derived from chlorinated water supplies exhibited resistance to chlorine, whereas 29 to 40% of the isolates from air, natural aquatic environments, and clinical materials were chlorine resistant. None of the tested authentic strains of Methylobacterium species obtained from culture collections exhibited chlorine resistance. Numerical analysis of phenotypic profiles showed that the test organisms could be divided into 19 clusters at a similarity level of 80%, at which all established Methylobacterium species tested were separated from each other except M. organophilum and M. rhodesianum. The chlorine-resistant isolates were randomly distributed among all clusters. The 16S ribosomal DNA (rDNA) sequence-based phylogenetic analyses showed that representatives of the isolates together with known Methylobacterium species formed a line of descent distinct from that of members of related genera in the alpha-2 subclass of the Proteobacteria and were divided into three subclusters within the Methylobacterium group. These results demonstrate that there is phenotypic and genetic diversity among chlorine-resistant Methylobacterium strains within the genus.

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Section: Discussionmentioning

confidence: 62%

mentioning

confidence: 99%

Phenotypic and genetic diversity of chlorine-resistant Methylobacterium strains isolated from various environments

Hiraishi

Furuhata

Matsumoto

et al. 1995

Appl Environ Microbiol

124

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“…Other studies have reported that 71.1% of isolates studied exhibited multidrug-resistance [ 24 ], and 91% of all E. coli strains were resistant to three or more antibiotics [ 25 ]. In another study conducted on bacterial isolates in drinking water in Cairo, the majority of the tested strains (62.4 to 98%) exhibited multiple antibiotic resistance [ 26 ]. Previous data from two major hospitals in Makkah, KSA showed that 24.6% of E. coli strains, 34.4% of K. pneumoniae strains, and 52.7% of P. aeruginosa strains were resistant to ceftazidime (cephalosporin 3rd generation) [ 27 ].…”

Section: Discussionmentioning

confidence: 99%

Distribution of Extended-Spectrum β-Lactamase (ESBL)-Encoding Genes among Multidrug-Resistant Gram-Negative Pathogens Collected from Three Different Countries

et al. 2021

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The incidence of Extended-spectrum β-lactamase (ESBL)-encoding genes (blaCTX-M and blaTEM) among Gram-negative multidrug-resistant pathogens collected from three different countries was investigated. Two hundred and ninety-two clinical isolates were collected from Egypt (n = 90), Saudi Arabia (n = 162), and Sudan (n = 40). Based on the antimicrobial sensitivity against 20 antimicrobial agents from 11 antibiotic classes, the most resistant strains were selected and identified using the Vitek2 system and 16S rRNA gene sequence analysis. A total of 85.6% of the isolates were found to be resistant to more than three antibiotic classes. The ratios of the multidrug-resistant strains for Egypt, Saudi Arabia, and Sudan were 74.4%, 90.1%, and 97.5%, respectively. Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa showed inconstant resistance levels to the different classes of antibiotics. Escherichia coli and Klebsiella pneumoniae had the highest levels of resistance against macrolides followed by penicillins and cephalosporin, while Pseudomonas aeruginosa was most resistant to penicillins followed by classes that varied among different countries. The isolates were positive for the presence of the blaCTX-M and blaTEM genes. The blaCTX-M gene was the predominant gene in all isolates (100%), while blaTEM was detected in 66.7% of the selected isolates. This work highlights the detection of multidrug-resistant bacteria and resistant genes among different countries. We suggest that the medical authorities urgently implement antimicrobial surveillance plans and infection control policies for early detection and effective prevention of the rapid spread of these pathogens.

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Drinking Water Distribution Systems: Controlling the Microbial Quality of Drinking Water

Geldreich

2003

Encyclopedia of Environmental Microbiology

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Basic Concepts in Distributing Microbially Safe Water Maintaining Distribution System Integrity Managing Water Quality Microbial Flora of Drinking Water Biofilm and Water Stability Monitoring Microbial Quality Case Studies on Pathogen Incursions

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Incidence of antibiotic resistant bacteria in drinking water in Cairo

Cited by 9 publications

References 6 publications

Phenotypic and genetic diversity of chlorine-resistant Methylobacterium strains isolated from various environments

Phenotypic and genetic diversity of chlorine-resistant Methylobacterium strains isolated from various environments

Distribution of Extended-Spectrum β-Lactamase (ESBL)-Encoding Genes among Multidrug-Resistant Gram-Negative Pathogens Collected from Three Different Countries

Drinking Water Distribution Systems: Controlling the Microbial Quality of Drinking Water

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