World TB Day Sees Global Push to Eradicate Disease by 2030

Tuberculosis, or TB, a bacterial infection of the lungs, is one of the world's deadliest diseases. After decades of progress, cases are on the rise once more. March 24 is World TB Day — and as Henry Ridgwell reports, there are hopes that a vaccine may be developed in the next few years to help eradicate the disease. Videographer: Henry Ridgwell