Figure 3

MCC phylogenetic tree of pol sequences based on the US clade. The MCC tree of HIV-1B in the US clade was estimated by a Bayesian Markov chain Monte Carlo approach, as described in the legend of Fig. 2. The geographic origins of the sequences are represented by colors or two-letter country codes as follows: AR, Argentina; AU, Australia; BR, Brazil; CA, Canada; CH, Switzerland; CN, China; DE, Germany; ES, Spain; FR, France; GB, United Kingdom of Great Britain and Northern Ireland; HN, Honduras; ID, Indonesia; IT, Italy; JP, Japan; KR, Korea; MM, Myanmar; MX, Mexico; PA, Panama; SD, Sudan; TH, Thailand; US, the United States of America; ZA, South Africa.