M. Matuszewska

The emergence and diversification of a zoonotic pathogen from within the microbiota of intensively farmed pigs

This study traces the emergence and spread of Streptococcus suis pathogens in pigs, linking their evolution to changes in farming practices and identifying genomic factors associated with pathogenicity.

Absence of Staphylococcus aureus in wild populations of fish supports a spillover hypothesis

This study investigates whether Staphylococcus aureus in wild fish results from spillover or adaptation, finding no S. aureus in wild trout or their environment, supporting spillover from other host populations.

Mutational spectra analysis reveals bacterial niche and transmission routes

The paper analyzes mutational spectra in bacterial lineages to infer niche-specific mutagen exposure and transmission routes.

Mutation rate dynamics reflect ecological change in an emerging zoonotic pathogen

The paper investigates how mutation rates in Streptococcus suis change with ecology and genome size, finding higher mutation rates in invasive disease isolates and a bias towards G/C to A/T mutations in more pathogenic strains.

Stable antibiotic resistance and rapid human adaptation in livestock-associated MRSA

This study tracks the evolutionary dynamics of mobile genetic elements in MRSA CC398 over 27 years, showing stable inheritance of resistance genes and rapid adaptation to human hosts.

A survey of Chinese pig farms and human healthcare isolates reveals separate human and animal MRSA populations

This study compares MRSA populations from Chinese pig farms and hospitals, finding distinct human and animal lineages with different genetic features and no evidence of spillover from farms to humans.