Fig. 6From: Impact of a single round of mass drug administration with azithromycin on active trachoma and ocular Chlamydia trachomatis prevalence and circulating strains in The Gambia and SenegalMinimum spanning tree analysis of ocular C. trachomatis isolates from the Bijagos Islands, Guinea-Bissau based on the six MLST target regions visualised by ompA type (a) and ‘WGS-type’ (b). Sphere sizes indicate the numbers of samples in each sphere. Solid branches show single-locus variants, dashed branches show double-locus variants and dotted branches show triple-locus variants. WGS with < 401 SNPs between them (fifth percentile of all pairwise differences) were defined as a ‘WGS-type’Back to article page