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Volume 2, Number 2—April 1996

Dispatch

Nosocomial Transmission of Multidrug-Resistant Mycobacterium tuberculosis in Spain

John V. Rullán*, Dionisio Herrera*, Rosa Cano*, Victoria Moreno†, Pere Godoy*, Enrique F. Peiró*, Juan Castell*, Consuelo Ibañez*, Arturo Ortega†, Leopoldo Sánchez Agudo†, and Francisco Pozo‡
Author affiliations: Instituto de Salud Carlos III, Ministerio de Sanidad y Consumo *Programa de Epidemiología Aplicada de Campo-Centro Nacional de Epidemiología; †Centro Nacional de Investigación Clínica y Medicina Preventiva; ‡Subdirección General de Salud, Madrid, Spain

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Table 4

Employee tuberculin screening conversion study results

Variable Convertors (%)
n = 24 Nonconvertors (%)
n = 68 RR (95% Cl)
Occupational exposure to high-risk areas
Yes 14 (70.0) 6 (30.0) 5.0 (2.7, 9.6)
No 10 (13.9) 62 (86.1)
Months exposed in high-risk areas ORb
0 6 (10.7) 50 (89.3) 1.0
1-6 4 (28.6) 10 (71.4) 3.3
7-36 14 (63.6) 8 (36.4) 14.6, p < 0.01

a RR (95% CI), relative risk (95% confidence intervals).
b Chi-square for linear trend.

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