TY - JOUR A1 - Hadfield, James A1 - Harris, Simon R. A1 - Seth-Smith, Helena M.B. A1 - Parmar, Surendra A1 - Andersson, Patiyan A1 - Giffard, Philip M. A1 - Schachter, Julius A1 - Moncada, Jeanne A1 - Ellison, Louise A1 - Vaulet, María Lucía Gallo A1 - Fermepin, Marcelo Rodríguez A1 - Radebe, Frans A1 - Mendoza, Suyapa A1 - Ouburg, Sander A1 - Morré, Servaas A. A1 - Sachse, Konrad A1 - Puolakkainen, Mirja A1 - Korhonen, Suvi J. A1 - Sonnex, Chris A1 - Wiggins, Rebecca A1 - Jalal, Hamid A1 - Brunelli, Tamara A1 - Casprini, Patrizia A1 - Pitt, Rachel A1 - Ison, Cathy A1 - Savicheva, Alevtina A1 - Shipitsyna, Elena A1 - Hadad, Ronza A1 - Kari, Laszlo A1 - Burton, Matthew J. A1 - Mabey, David A1 - Solomon, Anthony W. A1 - Lewis, David A1 - Marsh, Peter A1 - Unemo, Magnus A1 - Clarke, Ian N. A1 - Parkhill, Julian A1 - Thomson, Nicholas R. T1 - Comprehensive global genome dynamics of Chlamydia trachomatis show ancient diversification followed by contemporary mixing and recent lineage expansion Y1 - 2017/07/01 JF - Genome Research JO - Genome Research SP - 1220 EP - 1229 DO - 10.1101/gr.212647.116 VL - 27 IS - 7 UR - http://genome.cshlp.org/content/27/7/1220.abstract N2 - Chlamydia trachomatis is the world's most prevalent bacterial sexually transmitted infection and leading infectious cause of blindness, yet it is one of the least understood human pathogens, in part due to the difficulties of in vitro culturing and the lack of available tools for genetic manipulation. Genome sequencing has reinvigorated this field, shedding light on the contemporary history of this pathogen. Here, we analyze 563 full genomes, 455 of which are novel, to show that the history of the species comprises two phases, and conclude that the currently circulating lineages are the result of evolution in different genomic ecotypes. Temporal analysis indicates these lineages have recently expanded in the space of thousands of years, rather than the millions of years as previously thought, a finding that dramatically changes our understanding of this pathogen's history. Finally, at a time when almost every pathogen is becoming increasingly resistant to antimicrobials, we show that there is no evidence of circulating genomic resistance in C. trachomatis. ER -