The rise of new strains of TB which are resistant to drugs pose grave threat worldwide, warns Medical charity Medecins Sans Frontieres.
The charity said that the efforts to fight multidrug-resistant TB (MDR-TB) have been "inadequate" and they have called for an "immediate international response" to find new treatments, the Independent reported.
AdvertisementDespite continuous efforts TB still kills about 1.3 million people every year.
The new strains that are resistant to antibiotics are much harder to treat, and now nearly 500,000 cases of MDR-TB occur each year.
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