Flow diagram showing inclusion criteria for comparison group presumed to have single tuberculosis episode only, United States, 1993–2006
* Eligibility for completion of tuberculosis treatment within 12 months is defined as follows: patients have to be alive at diagnosis; initiate treatment; not die during treatment; and not have an initial isolate that is rifampin-resistant, have meningeal disease, or be a pediatric patient (aged <15) with miliary disease or positive M. tuberculosis blood culture.
† The US surveillance definition of tuberculosis recurrence is verified disease in a person with a previous diagnosis of tuberculosis who was discharged or lost to supervision for at least 12 months since the last clinical encounter for tuberculosis treatment.