Characterization of non-typable strains of Staphylococcus aureus from cases of hospital infection

A high percentage of non-typable (NT) Staphylococcus aureus strains was isolated in Spanish hospitals during 1984 and 1985. Several alternative methods of typing were employed to study these isolates. These were: phage-typing at 1000 × RTD, phage-typing after heat-treatment (48 °C), thermal shock (5...

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Veröffentlicht in:	Epidemiology and infection 1987-08, Vol.99 (1), p.191-200
Hauptverfasser:	Vindel, Ana, Martín-Bourgon, Cecilia, Saez-Nieto, Juan A., Nieto, Saez
Format:	Artikel
Sprache:	eng
Schlagworte:	Bacteriology Bacteriophage Typing Bacteriophages Biological and medical sciences Blood Coinfection Cross Infection - epidemiology Cross Infection - microbiology Disease Outbreaks Epidemiology Fundamental and applied biological sciences. Psychology Heat treatment Hot Temperature Humans Infections Microbiology Staphylococcal Infections - epidemiology Staphylococcus Staphylococcus aureus Staphylococcus aureus - classification Subcommittees Thermal shock
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Zusammenfassung:	A high percentage of non-typable (NT) Staphylococcus aureus strains was isolated in Spanish hospitals during 1984 and 1985. Several alternative methods of typing were employed to study these isolates. These were: phage-typing at 1000 × RTD, phage-typing after heat-treatment (48 °C), thermal shock (56 °C), reverse-typing and induction of additional phages. Using these methods the number of NT isolates was reducedby 60%. Best results were obtained with heat-treatment. Additional phages and reverse-typing were also useful. A scheme for the study of outbreaks and sporadic cases caused by NT strains is proposed using the methods described.
ISSN:	0950-2688 1469-4409
DOI:	10.1017/S0950268800067029