WHO says we can 'write the final chapter in the story of TB.' How close are we?

A doctor checks chest x-rays of a tuberculosis patient at a clinic in Mumbai, India, that treats those with drug-resistant strains of the disease. The World Health Organization has called for the eradication of this ancient and deadly infectious disease. (Punit Paranjpe/AFP via Getty Images)

The head of the World Health Organization is eager to wipe out one of the oldest and deadliest diseases.

Last week Tedros Adhanom Ghebreyesus declared: "We have an opportunity that no generation in the history of humanity has had: the opportunity to write the final chapter in the story of TB."