FIG 5.

Global transmission events inferred from Bayesian evolutionary analysis of RT017. From the geotemporal analyses we can infer the first movements into each continent, with the date and originating continent. The analysis indicates a North American origin with an expansion into Europe in the mid-1980s, followed by a move into Asia and on to Africa and South America through the 1990s and early 2000s. RT017 was not identified in Oceania (Australia) until the late 2000s, via a jump from Europe.