The rise of new strains of TB which are resistant to drugs pose grave threat worldwide, warns Medical charity Medecins Sans Frontieres.
![TB Resurgence Poses Grave Threat Worldwide TB Resurgence Poses Grave Threat Worldwide](https://www.medindia.net/afp/images/Health-flu-vaccine-research-113284.jpg)
Despite 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.
Source-ANI