Single nucleotide variants, SNVs, between 18 asymptomatic carriage samples and most closely genetically related prior and subsequent symptomatic/asymptomatic sample.

Participants are ordered by the number of SNVs to the most closely related sample. The participant numbering follows the same scheme used in Figure 2.*indicates acquisition following an initially negative sample.§indicates subsequently developed disease with the same strain,†indicates subsequently developed disease with a different strain.