Rare disease proves tough to diagnose

Drug-resistant pediatric tuberculosis a growing global health threat affecting young children

When a 2-year-old returned sick from a visit to India, US doctors suspected tuberculosis even though standard tests said this was not so.

It would take three months to confirm she had an extreme form of the disease - a saga that highlights the desperate need for better ways to fight TB in youngsters in countries that can't afford such creative care.