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Epidemiological complexity of hospital aeromonas infections revealed by electrophoretic typing of esterases

Published online by Cambridge University Press:  19 October 2009

B. Picard  and
Ph. Goullet
B. Picard
Affiliation:
Service de Microbiologie, Hôpital Beaujon (Faculté de Médecine Xavier Bichat, Universitê Paris VII), 100 boulevard du Général Leclerc, 92110 Clichy, France
Ph. Goullet
Affiliation:
Service de Microbiologie, Hôpital Beaujon (Faculté de Médecine Xavier Bichat, Universitê Paris VII), 100 boulevard du Général Leclerc, 92110 Clichy, France
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An epidemiology analysis of a series of 12 Aeromonas hydrophila infections, including six of septicaemia, which occurred on several wards of one hospital during the summer of 1982 is presented. The hypothesis that the hospital water could be the source of these infections was supported by the isolation of 1–10 motile aeromonads per ml in most of the water samples collected from various points on the hospital water system. Electrophoretic esterase typing was used as an epidemiological screening method to determine the relationship between bacterial strains isolated from the patients and those from water samples. The epidemiology of A. hydrophila infection in the hospital was found to be complex. Amongst the 15 strains of A. hydrophila isolated from patients were 8 zymotypes, while amongst the 126 strains from the water samples there were 37. In some cases, several zymotypes were isolated simultaneously from the same tap water. On one ward, the same zymotype was found in 2 patients and in 2 water samples. The prophylactic measures taken in 1982–5 to avoid oral contamination of immunocompromised patients with infected hospital water have significantly reduced the number of cases of septicaemia. This success has constituted additional retrospective evidence for the water-borne origin of these infections.

Type
Research Article
Information
Epidemiology & Infection , Volume 98 , Issue 1 , February 1987 , pp. 5 - 14
Copyright
Copyright © Cambridge University Press 1987

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