Risk factors for antibiotic-resistant E. coli in Ecuador Amato et al. 1 Title: Risk factors for extended-spectrum beta-lactamase (ESBL) producing E. coli carriage among children in a food animal producing region of Quito, Ecuador Authors: Heather K. Amato 1 , Fernanda Loayza 2 , Liseth Salinas 2 , Diana Paredes 2 , Daniela Garcia 2 , Soledad Sarzosa 2 , Carlos Saraiva-Garcia 2 , Timothy J. Johnson 3 , Amy J. Pickering 4 , Lee W. Riley, 5 * Gabriel Trueba 2 , Jay P. Graham 1 1 Environmental Health Sciences Division, School of Public Health, University of California, Berkeley, California, USA, heather_amato@berkeley.edu 2 Instituto de Microbiología, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito, Quito, Pichincha, Ecuador 170901 3 Department of Veterinary and Biomedical Sciences, University of Minnesota, Saint Paul, Minnesota, USA; Mid Central Research & Outreach Center, Willmar, Minnesota, USA 4 Amy J. Pickering, Department of Civil and Environmental Engineering, University of California, Berkeley, CA, USA Blum Center for Developing Economies, University of California, Berkeley, CA, USA 5 Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, CA 94720, USA * Recently deceased. Key Words: One Health, E. coli, ESBL, antibiotic resistance, food animals, Ecuador . CC-BY-NC-ND 4.0 International license It is made available under a is the author/funder, who has granted medRxiv a license to display the preprint in perpetuity. (which was not certified by peer review) preprint The copyright holder for this this version posted November 14, 2022. ; https://doi.org/10.1101/2022.11.14.22282279 doi: medRxiv preprint NOTE: This preprint reports new research that has not been certified by peer review and should not be used to guide clinical practice.