Hostname: page-component-77c89778f8-m8s7h Total loading time: 0 Render date: 2024-07-19T11:03:02.329Z Has data issue: false hasContentIssue false
  • English
  • Français

Airborne infection in a fully air-conditioned hospital: II. Transfer of airborne particles between rooms resulting from the movement of air from one room to another

Published online by Cambridge University Press:  15 May 2009

N. Foord  and
O. M. Lidwell
N. Foord
Affiliation:
Central Public Health Laboratory, Colindale Avenue, London NW9 5HT
O. M. Lidwell
Affiliation:
Central Public Health Laboratory, Colindale Avenue, London NW9 5HT
Rights & Permissions [Opens in a new window]

Summary

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Experiments were conducted simultaneously with gas and particle tracers to determine the relative loss of particles between source and recipient sites in the hospital ward units. The magnitude of this loss could be accounted for by the assumption of sedimentation from well-mixed air masses during the time required for movement between source and recipient sites. As a consequence of this loss the degree of isolation between patient rooms for airborne particles was between 4 and 25 times greater than that for gaseous contamination, which reflects the actual transport of air between the rooms.

The design and construction of portable spinning-disk particle generators suitable for field studies is discussed.

Type
Research Article
Information
Journal of Hygiene , Volume 75 , Issue 1 , August 1975 , pp. 31 - 44
Copyright
Copyright © Cambridge University Press 1975

References

REFERENCES

Foord, N. & Lidwell, O. M. (1972). The control by ventilation of airborne bacterial transfer between hospital patients, and its assessment by means of a particle tracer. I. An airborne-particle tracer for cross-infection studies. Journal of Hygiene 70, 279.Google Scholar
Foord, N. & Lidwell, O. M. (1975). Airborne infection in a fully air-conditioned hospital. I. Air transfer between rooms. Journal of Hygiene 75, 15.Google Scholar
Hambraeus, A. & Sanderson, H. F. (1972). The control by ventilation of airborne bacterial transfer between hospital patients, and its assessment by means of a particle tracer. III. Studies with an airborne-particle tracer in an isolation ward for burned patients. Journal of Hygiene 70, 299.Google Scholar
Lidwell, O. M. (1960). The evaluation of ventilation. Journal of Hygiene 58, 297.Google Scholar
Lidwell, O. M. (1975). Airborne infection in a fully air-conditioned hospital. III. Transport of gaseous and airborne particulate material along ventilated passageways. Journal of Hygiene 75, 45.Google Scholar
Lidwell, O. M. & Brock, B. (1973). Some aspects of the dispersal of Staphylococcus aureus in hospital wards. In Airborne Transmission and Airborne Infection (ed. Hers, J. F. Ph. and Winkler, K. C.). Utrecht, Netherlands: Oosthoek Publishing Co.Google Scholar
Lippmann, M. & Albert, R. E. (1967). A compact electric motor driven spinning-disc aerosol generator. American Industrial Hygiene Association Journal 28, 501.Google Scholar
May, K. R. (1949). An improved spinning top homogeneous spray apparatus. Journal of Applied Physics 20, 932.Google Scholar
Noble, W. C., Lidwell, O. M. & Kingston, D. (1963). The size distribution of airborne particles carrying micro-organisms. Journal of Hygiene 61, 385.Google ScholarPubMed
Walton, W. H. & Prewett, W. C. (1949). The production of sprays and mists of uniform drop size by means of spinning disc type sprayers. Proceedings of the Physical Society B 62, 341.Google Scholar