J C Grabau1, D J Burrows, M L Kern. 1. Bureau of Tuberculosis Control, New York State Department of Health, Albany 12237-0669, USA.
Abstract
OBJECTIVE: To investigate a cluster of newly identified tuberculosis infections. DESIGN: A field study was conducted including interviews; medical record reviews; checking of bills and invoices, pharmacy records, and drug manufacturer information; and clinical retesting. SETTING: Community residential facilities providing comprehensive services to retarded adults. PARTICIPANTS: Twenty residential facility staff (not previously known to be purified protein derivative [PPD] positive). RESULTS: Staff had been tested with 250 TU of PPD, and 9 of 20 were tuberculin positive. Retesting with 5 TU yielded no reaction. CONCLUSIONS: Reactions were attributable to testing with a product not recommended for routine PPD screening. Healthcare workers planting PPD Mantoux tests always should check the vials to ensure that the appropriate strength solution is being used.
OBJECTIVE: To investigate a cluster of newly identified tuberculosis infections. DESIGN: A field study was conducted including interviews; medical record reviews; checking of bills and invoices, pharmacy records, and drug manufacturer information; and clinical retesting. SETTING: Community residential facilities providing comprehensive services to retarded adults. PARTICIPANTS: Twenty residential facility staff (not previously known to be purified protein derivative [PPD] positive). RESULTS: Staff had been tested with 250 TU of PPD, and 9 of 20 were tuberculin positive. Retesting with 5 TU yielded no reaction. CONCLUSIONS: Reactions were attributable to testing with a product not recommended for routine PPD screening. Healthcare workers planting PPD Mantoux tests always should check the vials to ensure that the appropriate strength solution is being used.