Fig 4. Rate of wound healing at week 4 in Buruli patients with a negative or positive M. ulcerans 16S rRNA.

Rate of healing was highest in patients where M. ulcerans 16S rRNA was negative at baseline or 4 weeks after starting antibiotic treatment. The rate of healing at week 4 (ROH) was computed in millimeters per week by subtracting the mean diameter of the lesion at week 4 from that at week 0 and dividing this result by 4.