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The egg yolk reaction of Staphylococcus aureus isolated from burns

Published online by Cambridge University Press:  15 May 2009

E. J. L. Lowbury  and
B. J. Collins
E. J. L. Lowbury
Affiliation:
Medical Research Council Industrial Injuries and Burns Research Unit, Birmingham Accident Hospital
B. J. Collins
Affiliation:
Medical Research Council Industrial Injuries and Burns Research Unit, Birmingham Accident Hospital
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Staph. aureus from burns of in-patients were tested for egg yolk reaction during three periods; in 1958 and in 1960 approximately 80 % of the strains gave a negative reaction (EY-), but in 1962 only 36 % of the strains were egg yolk negative.

Staphylococci of phage group III were more commonly EY- than those of other groups isolated from burns. Within each of groups I and III, however, there were patterns predominantly EY- and others predominantly egg yolk positive (EY+); in group I the majority of strains isolated in 1960 were of phage type 52 and EY-, while those isolated in 1962 were predominantly of phage type 80 or related patterns which were always EY+.

Most of the staphylococci in burns were resistant to penicillin, tetracycline and erythromycin; within groups I and III, the staphylococci which were EY- were also more commonly resistant than EY+ strains to these three antibiotics.

Most of the staphylococci from burns were mercuric chloride resistant (presumptive epidemic strains); of the mercuric chloride sensitive staphylococci, the proportion of EY+ strains was greater than that of EY- strains.

Type
Research Article
Information
Journal of Hygiene , Volume 62 , Issue 2 , June 1964 , pp. 229 - 237
Copyright
Copyright © Cambridge University Press 1964

References

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