Genomic Epidemiology · Antimicrobial Resistance · One Health

Genomics, evolution and resistance
in streptococci

We combine genomics and microbiology to differentiate between closely related bacterial species, investigate antimicrobial resistance, and trace streptococcal lineages associated with infections in animals and humans.

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Faculty of Veterinary Medicine · Université de MontréalSaint-Hyacinthe, Québec, Canada

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Our research

Three connected research areas

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Streptococcal diversity and evolution

Species diversity, evolution and reliable pathogen identification.

Mechanisms of antimicrobial resistance

Genetic and molecular drivers of resistance in streptococci.

Genomic epidemiology and One Health

Host-associated populations and animal–human infections.

Research highlights

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Hsu et al. · Microorganisms · 2026

Streptococcus dysgalactiae subsp. equisimilis from Diseased Pigs Are Genetically Distinct from Human Strains and Associated with Multidrug Resistance.

SDSE strains from diseased pigs in Québec form populations genetically distinct from human lineages, with frequent multidrug resistance.

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Li et al. · Journal of Clinical Microbiology · 2025

Genomic re-evaluation of clinical isolates reveals a structured Streptococcus suis complex.

Genomic analysis of clinical isolates from pigs and cattle reveals multiple species misidentified as S. suis and limitations in routine identification.

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From the laboratory and our network

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Our projects connect microbiology, genomics, epidemiology and international collaboration.

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Genomics, evolution and resistancein streptococci