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Emergence and global spread of Listeria monocytogenes main clinical clonal complex

Alexandra Moura 1, 2, 3, * Noémie Lefrancq 4 Thierry Wirth 5, 6 Alexandre Leclercq 1, 2, 3 Vítor Borges 7 Brent Gilpin 8 Timothy J. Dallman 9 Joachim Frey 10 Eelco Franz 11 Eva M. Nielsen 12 Juno Thomas 13 Arthur Pightling 14 Benjamin P. Howden 15, 16 Cheryl L. Tarr 17 Peter Gerner-Smidt 17 Simon Cauchemez 4 Henrik Salje 4 Sylvain Brisse 18 Marc Lecuit 1, 2, 3, 19, 20, * The Listeria Cc1 Study Group 
Abstract : The bacterial foodborne pathogen Listeria monocytogenes clonal complex 1 (Lm-CC1) is the most prevalent clonal group associated with human listeriosis and is strongly associated with cattle and dairy products. Here, we analyze 2021 isolates collected from 40 countries, covering Lm-CC1 first isolation to present days, to define its evolutionary history and population dynamics. We show that Lm-CC1 spread worldwide from North America following the Industrial Revolution through two waves of expansion, coinciding with the transatlantic livestock trade in the second half of the 19th century and the rapid growth of cattle farming and food industrialization in the 20th century. In sharp contrast to its global spread over the past century, transmission chains are now mostly local, with limited inter- and intra-country spread. This study provides an unprecedented insight into L. monocytogenes phylogeography and population dynamics and highlights the importance of genome analyses for a better control of pathogen transmission.
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Submitted on : Wednesday, June 15, 2022 - 4:20:54 PM
Last modification on : Thursday, October 20, 2022 - 3:10:07 PM

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Alexandra Moura, Noémie Lefrancq, Thierry Wirth, Alexandre Leclercq, Vítor Borges, et al.. Emergence and global spread of Listeria monocytogenes main clinical clonal complex. Science Advances , 2021, 7 (49), pp.eabj9805. ⟨10.1126/sciadv.abj9805⟩. ⟨pasteur-03696138⟩

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