Abstract
One hundred strains of group B streptococci isolated from human infections were tested for growth on dip-slides available for the culture of urine. All grew on CLED agar, and none grew on MacConkey agar. The colonies were barely or not at all visible to the naked eye after overnight incubation (diameter, around 0.1 mm). The colony size increased eith prolonged incubation, but not if the inoculum density exceeded 10(6)/ml. Differences were found between lots of dip-slides. Poor growth on dip-slides may explain why group B streptococci have received little attention as pathogens of the urinary tract. The dip-slide screening personnel of one laboratory were informed of the experimental findings, and they started the practice of frequent subculture and prolonged incubation. The proportion of group B streptococci in significant bacteriuria increased from 0 to about 2% of positive cultures, whereas there was no conmitant increase of group B streptococci in dip-slides screened in several other laboratories serving as controls.
Publisher
American Society for Microbiology
Reference11 articles.
1. Double-zone beta-hemolytic streptococci. Their cultural characteristics, serological grouping, occurrence and pathogenic significance;Brown J. H.;J. Bacteriol.,1939
2. Detection of bacteriuria by dip-slide. Routine use in a large general hospital;Ellner P. D.;Am. J. Clin. Pathol.,1975
3. Extrarespiratory streptococcal infections. Importance of the various serological groups;Feingold D. S.;N. Engl. J. Med.,1966
4. Dip-slide: an aid to quantitative urine culture in general practice;Guttmann D.;Br. Med. J.,1967
5. Presumptive identification and antibiotic susceptibility of group B streptococci;Jokipii A. M. M.;J. Clin. Pathol.,1976
Cited by
6 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献