Extended Data Fig. 7: Sharing of sub-lineages between different locations within the Ganges basin.

The proportion of each sub-lineage within a geographic location is represented by a pie chart. The width of segments joining each pie chart represent the number of sub-lineages shared between each location. a. Sub-lineages shared between Khulna, Kolkata and the rest of Bangladesh, from 2015–2018. b. Sub-lineages shared between Assam and North India, Kolkata and Bangladesh, from 2002–2005. A sub-tree displaying the phylogenetic context of samples from Assam is also shown. c. Sub-lineages shared between Nepal, India and Bangladesh in 2010.