2005, Number 73
Nosocomial bacteremia by Serratia marcescens in an Oncology service of the National Institute of Pediatric
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ABSTRACTObjective: Along the period of January 2nd to 14th 2003, a bacteriemia outbreak by Serratia marcescens presented at the Oncology Service of the Instituto Nacional de Pediatría in Mexico City. The objective of the present study was to describe this outbreak by a case-control study.
Materials and Methods: A case was defined by the presence of bacteriemia by S. marcescens in the Oncology Service during the epidemic period. For the identification of the risk factors the patients with S. marcescens were compared with controls.
Results: Seven cases of bacteriemia by S. marcescens were identified; the hospital stay was larger than that of the controls (12 vs. 3 days p#8249;0.05). Both, female gender (OR 4.28 p.1) and central venous catheter (OR 6.6 p .06) p¡#8250;0.05) showed a risk tendency; even throw the amplitude of the odds ratio and a non-significant p did not aloud us to establish them as risk factors.
Conclusions: On the basis of the epidemic curve the person to person transmission was considered, even though it was not confirmed because of the lack of positivity in the cultures taken to the persons in contact with the cases. The size of the sample does not aloud us to determine the epidemiologic association.
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