The definition of extensively drug-resistant tuberculosis (XDR-TB) has been revised by the World Health Organization (WHO)'s Global TB Programme, who have also defined pre-XDR-TB for the first time, ...

Tuberculosis (TB) is an infectious or contagious disease. It is caused due to bacteria known as Mycobacterium tuberculosis that spread from person to person through airborne particles i.e. when people ...

Latent tuberculosis is defined by the presence of an antigen-specific T cell response in the absence of clinical symptoms. It includes conditions ranging from clearance of the pathogen, maintenance of ...