Xavier BERTRAND

Xavier BERTRAND is a Professor affiliated with the University of Franche-Comté and CHU Besançon. His research group, PATHOGENES, focuses on the emergence and spread of antibiotic-resistant bacteria using molecular biology, phenotypic analysis, and genomic approaches. He holds a PhD and HDR (Habilitation à Diriger des Recherches) and works extensively on epidemiological studies within hospital, environmental, and animal contexts.

BERTRAND's research centers on antibiotic resistance, healthcare-associated infections, epidemiology, One Health, Gram-negative bacteria, and genomic analysis. His work evaluates antibiotic consumption impacts, SOS response mechanisms in resistance emergence, and the dissemination of multidrug-resistant pathogens across ecological compartments. The group employs whole-genome sequencing and bioinformatics to analyze large bacterial strain collections.

BERTRAND's recent publications (2019–2025) predominantly explore genomic epidemiology, antimicrobial resistance dynamics, and pathogen transmission in diverse settings. Key themes include ESBL-producing Enterobacteriaceae in environmental/human interfaces, Pseudomonas aeruginosa contamination in water systems, Staphylococcus aureus epidemiology, and diagnostic innovations for bacterial detection. Trends highlight a strong emphasis on One Health frameworks, integrating human, animal, and environmental data to combat resistance.

No scientific awards, grants, or supervised students are detailed in the provided text.

He leads the PATHOGENES research group, which investigates bacterial pathogenesis using experimental and computational methods. The team collaborates internationally on projects related to antimicrobial resistance surveillance, outbreak management, and environmental microbiology.