1887

Abstract

SUMMARY

Normal skin sites in children from a population in which streptococcal impetigo is endemic were examined for the presence of -haemolytic streptococci by a direct agar-contact technique. Ninety-eight of 554 samples (18%) were positive for these organisms. Penicillin prophylaxis reduced the frequency of isolation of streptococci from the normal skin for a period of 3 weeks, perhaps accounting in part for the lower isolation rate in this than in earlier studies.

Numbers of streptococcal colony-forming units in positive samples were generally low, both in terms of absolute numbers isolated from the surface area sampled and in comparison with numbers of other aerobic flora recovered. The presence of streptococcal pyoderma at the time of agar contact was not necessarily associated with the presence of or with increased numbers of streptococci on samples obtained from normal skin sites. Low counts were consistently found in early summer and higher counts in some samples in late summer.

In a simultaneous comparison of paired samples taken from adjacent sites, the frequency of detection of streptococci by direct agar contact compared favourably with that obtained with a moist-swab method. The increased frequency of detection by the agar-contact method appeared to be related to an increased sensitivity for the detection of low numbers of streptococcal colony-forming units on the normal skin.

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/content/journal/jmm/10.1099/00222615-8-4-503
1975-11-01
2022-01-19
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References

  1. Armbruster E. H. 1962; Evaluation of surface contamination. J. envir. Hlth 25:26
    [Google Scholar]
  2. Dudding B. A., Burnett J. W., Chapman S. S., Wannamaker L. W. 1970; The role of normal skin in the spread of streptococcal pyoderma. J. Hyg., Camb 68:19
    [Google Scholar]
  3. Favero M. S., McDade J. J., Robertsen J. A., Hoffman R. K., Edwards R. W. 1968; Microbiological sampling of surfaces. J. appl. Bact 31:336
    [Google Scholar]
  4. Ferrieri P., Dajani A. S., Wannamaker L. W. 1974; A controlled study of penicillin prophylaxis against streptococcal impetigo. J. infect. Dis 129:429
    [Google Scholar]
  5. Ferrieri P., Dajani A. S., Wannamaker L. W., Chapman S. S. 1972; Natural history of impetigo. I. Site sequence of acquisition and familial patterns of spread of cutaneous streptococci. J. din. Invest 51:2851
    [Google Scholar]
  6. Greene V. W., Vesley D., Keenan K. M. 1962; New method for microbiological sampling of surfaces. J. Bact 84:188
    [Google Scholar]
  7. Hall L. B., Hartnett M. J. 1964; Measurement of the bacterial contamination on surfaces in hospitals. Publ. Hlth Rep., Wash 79:1021
    [Google Scholar]
  8. Holt R. J. 1971; Aerobic bacterial counts on human skin after bathing. J. med. Microbiol 4:319
    [Google Scholar]
  9. Lancefield R. C. 1933; A serological differentiation of human and other groups of hemolytic streptococci. J. exp. Med 57:571
    [Google Scholar]
  10. Markham N. P., Stenhouse A. C. 1959; A bacteriological investigation of wound infections in Raratonga, Cook Islands. Trans. R. Soc. trop. Med. Hyg 53:404
    [Google Scholar]
  11. Rubbo S. D., Dixson S. 1960; A contact-plate technique for determining bacterial contamination of fabrics. Lancet 2:394
    [Google Scholar]
  12. Wannamaker L. W., Dajani A. S., Ferrieri P., Kaplan E. L., Brown J. 1973; Local factors as determinants of streptococcal infection. In Streptococcal disease and the community, Proc. 5th Int. Symp. on Streptococcus pyogenes, 1972 edited by Haverkorn M. J., Valkenburg H. Amsterdam: p 251
    [Google Scholar]
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