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[Epidemiology of tuberculosis in Navarre].

BACKGROUND
To describe the tendency and epidemiological characteristics of tuberculosis and estimate the prevalence of tuberculosis infection in Navarre. Methods. An analysis was made of the cases of tuberculosis reported in the 1993-2006 period, completed with microbiological information and data from other registries.


RESULTS
The incidence of tuberculosis in Navarre declined from 24.0 cases per 100,000 inhabitants in 1993 to 13.7 per 100,000 in 2006. Between 2000 and 2006 the incidence of tuberculosis fell by an annual 6.5% in those born in Spain and by an annual 9.3% in those born in other countries. In the 2004-2006 period, the diagnoses of tuberculosis were more frequent in males (60%), between the ages of 25 and 34 years (26.1%), and over 65 years of age (24.1%), and in persons born in Spain (69.0%). Four point three percent of the cases were coinfected with HIV. Six point six percent had had prior antituberculosis treatment, 5.4% showed resistance to some antituberculosis drug, and 2.3% resistance to more than one. There was a predominance of pulmonary forms (68.9%) and 37% of the total had positive sputum bacilloscopy. Death occurred in 6.2% of the cases before treatment was finalised. Between 2004 and 2006 15 clusters of cases were detected, 11 amongst cohabitants. Ninety-three percent of the secondary cases occurred from index cases born in Spain.


CONCLUSION
There has been a notable advance in the control of tuberculosis, both in the native population and in that from other countries, although there is still room for improvement.