Tuberculosis is becoming concentrated among immigrants, drug addicts, and the poor and homeless in Western Europe's big cities despite progress in reducing national rates of the disease, experts said on Friday.

Patients with potentially fatal "superbug" forms of tuberculosis (TB) could in future be treated using stem cells taken from their own bone marrow, according to the results of an early-stage trial of the technique.

Homeless people across the world have dramatically higher rates of infection with tuberculosis (TB), HIV and hepatitis C and could fuel community epidemics that cost governments dear, a study showed on Monday.

LONDON (Reuters)- On New Year's Eve 2004, after months of losing weight and suffering fevers, night sweats and shortness of breath, student Anna Watterson was taken into hospital coughing up blood.