Mumbai: In a shocking revelation, as many as 60% of healthcare workers at Asia's largest tuberculosis (TB) hospital in Sewri have been diagnosed with the multidrug-resistant form of the disease, according to a latest study done by doctors.

When the chest pain and racking cough of tuberculosis patient Asha (31) refused to subside even after six months of treatment, the doctor got her sputum tested again - only to find that she had developed a worrying form of the disease known as Extensively Drug Resistant TB, which is nearly impossible to treat as of now.