Fig 1.
Dorsal necrotic ulcer to fourth digit.
Fig 2.
X-ray left fourth digit proximal and middle phalanx, showing focal bony lysis and cortical erosion.
Fig 3.
Dry, small ulcer on the inner aspect of the right upper arm.
Fig 4.
Hematoxylin and eosin stains (original magnification ×200) from tissue biopsy of lesion, showing fat necrosis.
Fig 5.
Ziehl-Neelsen stain (original magnification ×400) demonstrating acid-fast bacilli in the wound biopsy.
Fig 6.
Phylogeographic analysis of Batemans Bay isolates in the context of the population structure of M. ulcerans in south-eastern Australia.
A maximum likelihood phylogenomic tree of M. ulcerans isolates was estimated using core genome SNPs, with branch lengths corresponding to SNP distances. The tree illustrates the clustering of isolates, with isolates from Batemans Bay and Far East Gippsland forming a distinct cluster. The lineage harboring the Batemans Bay and Far East Gippsland isolates traces back to the south-eastern Australian M. ulcerans most recent common ancestor, before branching out towards isolates from the more western localities of Gippsland, Phillip Island, and the Port Phillip Bay area. Link to the Open Street Map basemap: https://www.openstreetmap.org/#map=7/-36.752/144.278; link to the Open Street Map copyright and license information: https://www.openstreetmap.org/copyright.