Fig. 1

Steps in identifying recurrent cases of tuberculosis, Finland, 1995–2013. ^a Non-tuberculous mycobacterium registered as M. tuberculosis (N = 2), registration for false identity (N = 1) or incorrect registration date by the notifier (N = 10). ^b Only one long continuous TB episode (N = 5), or treating physician decided to give TB treatment without specific evidence of TB and in subsequent expert assessment by the study team there was another more likely cause for the disease (N = 9)