Decreased Tuberculosis Incidence and Declining Clustered Case Rates, Madrid

Abstract

To determine effect of recent tuberculosis transmission rates on incidence rates, we conducted 2 prospective population-based molecular epidemiologic studies in Madrid during 1997–1999 (4% immigrants) and 2002–2004 (14.9% immigrants). Case rates decreased in association with declining clustered case rates among Spanish-born persons. New strains were introduced through immigration.

Keywords

• Tuberculosis transmission
• molecular epidemiology
• tuberculosis prevention and control
• dispatch
• Spain