Frontline | "TB Silent Killer" extended trailer | PBS

An unforgettable portrait of lives forever changed by tuberculosis. FRONTLINE tells the heart-wrenching stories behind the spread of a deadly infection threatening people around the world. Despite efforts to eradicate it, Tuberculosis remains one of the world's deadliest diseases, a contagious airborne illness infecting more than eight million people a year.  But what has global health officials most alarmed are spreading strains of TB that are highly resistant to drug treatments. In this intimate film, FRONTLINE travels to the epicenter of the TB crisis -- the Southern African nation of Swaziland -- where families are waging an often hopeless fight for survival.