Nontuberculous mycobacteria (NTM) infections are ten times more prevalent than tuberculosis infections, affecting primarily the elderly and immunocompromised. Bryan Garcia, MD, a pulmonologist, discusses the likely origins of NTM, who is most at risk to be infected by these ubiquitous bacteria, and the criteria for diagnosis. Learn why NTM needs to be better accounted for at both the epidemiological and clinical levels in the future.