Outbreak of multidrug-resistant tuberculosis in two secondary schools.

Objectives: To describe an outbreak of multidrug-resistant tuberculosis (MDR-TB) in two schools

Methods: This was a prospective, observational study of an outbreak of MDR-TB in 2 schools located in the towns of Onda and Nules, in the Spanish province of Castellon, from the moment of detection in November 2008 until November 2014, including patient follow-up and contact tracing.

Results: Five cases of MDR-TB were diagnosed. Overall attack rate was 0.