Clustering dendrogram of M. genitalium genotype profiles in concurrently infected couples. Eighteen couples were Scandinavia (SC) and 13 were from New Orleans (NO). The dendrogram was constructed using categorical coefficient and UPMGA clustering. Each couple was assigned the same number. F – female; M – male. One female (12-F) had two male partners 12-M1 and 12-M2. For specimens containing mixed sequences, the genotypes are listed in the order from predominant to minor type. The 4 couples showing mismatching profiles were highlighted in four different colours.