Providencia stuartii nosocomial urinary tract infections occurring in the same hospital over an 18-month period of retrospective study were shown, by serotyping and biotyping, to have been caused by two endemic strains. Two episodes, involving 38 patients in one ward and 11 patients in another, were caused by a mannitol-positive strain of serotype O55. Transmission of the strain through the mov...

A total of 52 clinical strains of Helicobacter pylori were characterized on the basis of preformed enzyme production with API ZYM kits. Using the biotyping schemes as defined by Reina and Alomar (1989), Kung et al (1989) and Matsumoto et al (1996), 15.3% (8/52), 13.5% (7/52) and 11.5% (6/52) of the isolates were not biotypable, respectively. Two enzymes, valine arylamidase and cystine arylamida...

Cultures of Escherichia coli of urinary origin were examined after storage for 12 to 15 years by a combination of the techniques of biotyping, resistotyping, haemagglutinin typing, and colicin typing (multiple typing) which allowed strain identification to be made even when variation in one or more typing characters had occurred in vivo. Biotyping and resistotyping used in conjunction were suff...

The possible role of Brucella spp. in 65 abortion cases, 55 from sheep and 10 from goats, occurring in the birth seasons of 2004 and 2005 in northwestern Turkey was investigated. Colony morphology, agglutination by acriflavin, H2S production, CO2 requirement, dye sensitivity in thionin, basic fuchsin, growth characteristics in streptomycin, lysis with Tbilisi phage, and agglutination with monos...

The Minitek system and the more recently introduced Micro Scan HNID panels for the identification and biotyping of 98 V dependent Haemophilus isolates were compared. Identical results were obtained for 77 isolates. The discrepancy in the results of ornithine and urease was accounted for mainly by the mismatching of the identification by the two kits. When 13 isolates of H parainfluenzae with mi...

Brucella abortus biotypes 1 and 2 were recovered from various tissues of a naturally infected cow. This result indicates a need for biotyping multiple isolates of B. abortus from several affected animals in a herd before the biotype of the infecting strain can be definitively established.

The epidemiology of an outbreak of Candida endophthalmitis in heroin addicts was studied by DNA typing. Although one biotype was prevalent, the 13 isolates of Candida albicans from seven of the patients were placed into six separate groups by DNA type. Thus, the outbreak of candidiasis was not, as had been concluded from biotyping, due to a C. albicans strain of common origin.

The characterization of 556 Micrococcaceae isolates from various clinical sources has been presented. The incidence of coagulase-negative mannitol-positive staphylococci was 3.2% and that of coagulase-positive mannitol-negative staphylococci was 1.6%. There appears to be insufficient justification for the routine reporting of staphylococcal variants from a general bacteriology laboratory, and b...