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Advances in the elaboration of novel genomic types of beta-galactosidase-positive Enterobacteriaceae and comprehensive studies of their habitats have resulted in an innovative approach to the assessment of the merits and shortcomings of the thermotrophic and fecal species Escherichia coli and all other coliforms as markers of the microbiological safety of(More)
We propose the name Pseudomonas monteilii for a new species of gram-negative, rod-shaped, motile bacteria that were nonhemolytic on blood agar and were isolated from clinical sources. The 10 strains of P. monteilii were incapable of liquefing gelatin. They grew at 10 degrees C but not at 41 degrees C, produced fluorescent pigments, catalase, and cytochrome(More)
Many classes of pathogens excreted in feces are able to initiate waterborne infections. There are bacterial pathogens, including enteric and aquatic bacteria, enteric viruses, and enteric protozoa, which are strongly resistant in the water environment and to most disinfectants. The infection dose of viral and protozoan agents is lower than bacteria, in the(More)
During an 18-month period we identified two cases of septicemia and 24 examples of colonization of humans by Klebsiella trevisanii. Organisms were identified using the API 20EC and API 147 assimilation galleries. Of 147 clinical isolates initially identified as K. oxytoca, 18% were found to be K. trevisanii. Tracheal aspirate was the most common source of(More)
Low concentrations of all types of bacteriophages in groundwater limit their power to predict the presence of enteric viruses. There is little concordance in the literature regarding phage detection methods, thus making comparisons extremely difficult. Different authors have used different hosts, phage concentration methods, and end-point determinations.(More)
Natural mineral water originates from groundwater, an oligotrophic ecosystem where the level of organic matter is low and of a very limited bioavailability. The bacterial populations that evolve in these ecosystems are heterotrophic and in starvation-survival state resulting from an insufficient amount of nutrients; for this reason they enter a viable but(More)
Nitrates originating from food and particularly from water are supposedly precursors of carcinogenic N-nitroso compound (NOC) formed within the organism. According to Correa and al. these transformations could be a consequence of bacterial gastric pollution resulting from certain hypochlorhydric conditions. Much epidemiological research has tried to(More)
This epidemiological survey was conducted in the Northern country of France, on 753 communes. Nitrate concentration in drinking water was measured from 1974 to 1976. The mean concentration rates (M.C.R.) calculated for the three years, were under 95 mg/l, and 93% were under 43 mg/l. The association between the M.R.C. and digestive and urinary cancer(More)
The classification of 169 strains related to the species Enterobacter agglomerans or Erwinia berbicola has been carried out by numerical procedure. The taxonomic position of the strains is discussed in relation to the species Enterobacter sakazakii, Rahnella aquatilis, Escherichia adecarboxylata. Five principal groups can be defined. The Ent. agglomerans or(More)