TABLE 1

Alternative transmission scenarios and probabilities of transmission used in the broken-stick model

VerticalHorizontal
ScenarioMaternalPaternalSiblingHouseholdCommunity
10.9000.0500.0000.0000.050
20.4750.4750.0000.0000.050
30.4500.0500.0000.0000.500
40.2500.2500.0000.0000.500
50.2500.2500.1670.1670.167
60.0250.0250.5000.4000.050
70.0250.0250.0500.0500.850
80.030.010.050.130.78
  • Scenarios 1 and 2 represent predominantly vertical transmission, 3–5 mixed transmission, 6–7 predominantly horizontal transmission with little (6) or substantial (7) contribution from the external community, and 8 the probabilities of transmission calculated from pairwise comparisons of sequences.