Introduction
Globally, tuberculosis (TB) remains a significant cause of ill health and is a leading cause of death due to an infectious agent (1). Five main health-related risk factors – diabetes mellitus (diabetes), HIV, smoking, undernutrition and disorders due to alcohol use – account collectively for just under half of all new TB episodes globally. The contribution of these risk factors to the global TB burden is reported annually in the World Health Organization’s (WHO’s) global tuberculosis report (1).
