Internal medicine

Pathology

Nontuberculous mycobacteria

Tuberculosis

Mycobacterium avium complex

Biology

Microbiology

Intensive care medicine

Mycobacterium

Mycobacterium Infections

Pulmonary disease

Medicine

Emerging infectious diseases

In Ontario, Canada, during 1998–2010, nontuberculous mycobacteria (NTM) from pulmonary sites comprised 96% of species/patient combinations isolated; annual rates of isolation and cases increased steadily. NTM isolates from nonpulmonary sites comprised 4% of species/patient combinations; annual rates and cases were temporally stable. NTM increases were driven exclusively by pulmonary isolates and disease.

Pulmonary versus Nonpulmonary Nontuberculous Mycobacteria, Ontario, Canada