Disclaimer: Early release articles are not considered as final versions. Any changes will be reflected in the online version in the month the article is officially released.
Multisectoral Emergence of Multidrug-Resistant Campylobacter coli Sequence Type 10042 Lineage, Europe, 2018–2025
Mónica Azevedo
1, Alexandra Nunes
1, Maria-Leonor Lemos, Paulo Martins Costa, Ana Amaro, Lurdes Clemente, Célia Leão, Sónia Ramos, Isabel Santos, Katrine Grimstrup Joensen, Catherine Ragimbeau, Lena de Baets, Joël Mossong, Sangeeta Banerji, Antje Flieger, Diana Espadinha, William Byrne, Oda van den Berg, Andries Augustus Kampfraath, Quentin Jehanne, Philippe Lehours, João Paulo Gomes, and Mónica Oleastro
Author affiliation: National Institute of Health Doutor Ricardo Jorge (INSA), Lisbon, Portugal (M. Azevedo, A. Nunes, M.-L. Lemos, J.P. Gomes); Research in Veterinary Medicine (I-MVET)/Animal and Veterinary Research Center (CECAV), Faculty of Veterinary Medicine, Lusófona University—Lisbon University Centre, Lisbon (A. Nunes, S. Ramos, I. Santos, J.P. Gomes); ICBAS-Institute of Biomedical Sciences Abel Salazar, University of Porto, Porto, Portugal (M.-L. Lemos, P.M. Costa); Laboratory of Bacteriology and Mycology, National Institute of Agrarian and Veterinary Research, Oeiras, Portugal (A. Amaro, L. Clemente, C. Leão); Statens Serum Institut, Copenhagen, Denmark (K.G. Joensen); Laboratoire National de Santé, Dudelange, Luxembourg (C. Ragimbeau); Laboratoire Vétérinaire et Alimentaire, Division of the Luxembourg Veterinary and Food Administration, Dudelange (L. de Baets); Ministère de la Santé et de la Sécurité Sociale, Direction de la Santé, Luxembourg, Luxembourg (J. Mossong); Robert Koch-Institute, Wernigerode, Germany (S. Banerji, A. Flieger); Public Health Laboratory Dublin, Health Service Executive, Dublin, Ireland (D. Espadinha); Backweston Complex, Celbridge, Ireland (W. Byrne); National Institute of Public Health and the Environment (RIVM), Bilthoven, the Netherlands (O. van den Berg); European Centre for Disease Prevention and Control, Stockholm, Sweden (O. van den Berg); Wageningen Bioveterinary Research, Wageningen UR, Lelystad, the Netherlands (A.A. Kampfraath); French National Reference Centre for Campylobacters and Helicobacters, Bordeaux Hospital University Centre, Bordeaux, France (Q. Jehanne, P. Lehours); University of Bordeaux, INSERM, Bordeaux Institute of Oncology, Bordeaux (P. Lehours)
Main Article
Figure 3

Figure 3. Diversity of the Campylobacter coli sequence type 10042 isolates from Portugal in study of multisectoral emergence of multidrug-resistant C. coli sequence type 10042 lineage, Europe, 2018–2025. Minimum-spanning tree of 104 Portugal isolates shows genetic diversity assessed using a gene-by-gene approach based on the PubMLST core-genome MLST v1 scheme (1,343 loci). Minimum-spanning tree was generated using the MSTreeV2 algorithm in GrapeTree (https://github.com/achtman-lab/grapetree) and based on allelic differences. Filled circles (sizes proportional to the number of isolates) represent unique allelic profiles. Nodes are colored by year of isolation (A) and source (B). Solid lines indicate genetic clusters defined by an allelic distance <5, whereas dashed lines indicate an allelic distance >5.
Main Article
Page created: August 13, 2026
Page updated: September 18, 2026
Page reviewed: September 18, 2026
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.