Stephanopoulos joins Roberts, who's been a co-anchor of ABC's Good Morning America since 2005. When not traveling around the country or the world covering breaking news events, Roberts is at GMA's studio in Times Square conducting interviews with a diverse group of newsmakers.
Tuberculosis, MTB, or TB (short for tubercle bacillus), in the past also called phthisis, phthisis pulmonalis, or consumption, is a widespread, infectious disease caused by various strains of mycobacteria, usually Mycobacterium tuberculosis.
The vaccine is 70-80% effective against the most severe forms of TB, such as TB meningitis in children. It is less effective in preventing respiratory disease, which is the more common form of TB in adults. Read more about the BCG vaccine.