Fig. 1
Flow chart of study design and sample inclusion. Abbreviations: TB, tuberculosis; PCR, polymerase chain reaction; AFB, acid fast bacilli. 1Uncategorised cases included 3 patients who died, 2 patients that did not show for clinical controls, 8 patients that had not been given a definite diagnosis 8 months after inclusion of samples ended, but for whom TB could not be ruled out either because they have previously been treated for TB or because histopathology showed necrotising granulomas and giant cells in the samples included. The last patient was given a clinical TB diagnosis, but the sample included in the study showed no pathology and may be non-representative of the site of infection