USPHS Study 26:  Highly intermittent
short-course treatment of LTBI
Patients with LTBI at high risk for
developing active disease will receive INH
for 9 months OR once weekly INH/rifapentine
for 12 doses (3INH/RPT)
Main study outcome:  rate of development of
active tuberculosis
Almost ~3,000 enrolled to date, sample size
= 8,000 total or 4,000 per arm