Veille documentaire MTPH

Médecine du travail du personnel hospitalier

Room size is the major determinant for tuberculin conversion in health care workers exposed to a multidrug-resistant tuberculosis patient.

Int Arch Occup Environ Health. 2006 Dec 13; [Epub ahead of print]
Room size is the major determinant for tuberculin conversion in health care workers exposed to a multidrug-resistant tuberculosis patient.
Franchi A, Richeldi L, Parrinello G, Franco G.
Occupational Health Unit, Policlinico Hospital, 8th floor, room # 8.056, Via Largo del Pozzo 71, 41100, Modena, Italy.

OBJ ECTIVE: Transmission of Mycobacterium tuberculosis (MTB) to health care workers (HCWs) still represents a public health concern. A total of 71 obstetric workers underwent contact tracing after recent workplace exposure to a highly infectious multidrug-resistant tuberculosis patient [i.e., index case (IC)]. Aim of the study was to identify the main exposure predictors for the risk of conversion through evaluation of tuberculin screening results. METHODS: HCWs were investigated by a questionnaire (community, occupational, IC exposure risk factors) and tuberculin skin test screening. RESULTS: Conversion was detected in 5 (8%) of the 63 exposed workers and was not associated with either community or previous work-related risk factors. According to risk assessment, tuberculin conversion was related to neither amount time of exposure, workshifts, nor number of contacts. Conversely, an exposure to the IC in different hospital rooms was found significantly different among converters compared to non-converters (chi (2), P = 0.004). In particular, conversion was associated with exposure in two (obstetric emergency room, ambulatory discharge) out of the nine contact environments. Tuberculin conversion rates were associated with the room cubations of the exposure environments (chi (2) for trend, P PubMed

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doi:10.1007/s00420-006-0160-1

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