The increasing rates of infection and morbidity from NTM in non-CF patients 1, 2 is likely similarly trending amongst patients with CF. In the US, a 1992 study from the University of North Carolina at Chapel Hill 3 revealed a high prevalence of CF patients with NTM infection in the southeastern United States. Of 87 patients studied 17 (19.5%) had at least one positive culture for NTM. A 1993 study was reported from the University of Washington 4 revealing a prevalence of 12.5% amongst their 64 adult patients.