PMID: 6990452Jan 1, 1980Paper

Identification of some atypical (morpho-cultural and enzymatic) characteristics of E. coli strains isolated in different clinical and epidemiological conditions

Revista de igienă, bacteriologie, virusologie, parazitologie, epidemiologie, pneumoftiziologie. Bacteriologia, virusologia, parazitologia, epidemiologia
C GeorgescuD Racoviţă

Abstract

From among the 2813 E. coli strains isolated from various specimens (urine, feces, pharyngeal exudates, organs from fowls) in the course of two years, the authors selected and carried out a complex study on the strains exhibiting atypical features, considered to give rise to errors of diagnosis. Of the 2813 strains studied, 599 (21.29%) presented different atypical traits : 45 (1.59%) morphological and cultural (very small pulvurelent colonies or extremely mucous, oily colonies), 21 (0.74%) morphological, cultural and enzymatic atypical aspects and 533 (18.96%) only enzymatic (non-indolegenous strains, strains giving a methyl red reaction, H2S positive strains, lactose-negative and adonite or inosite-positive strains).

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