Philip A. Karlsson

The paper shows that susceptible Enterococcus faecalis and Escherichia coli in catheter biofilms survive β-lactam treatment through mutualistic interactions and persister-like states, without resistance.

The paper shows that the pcnB gene in Shigella flexneri promotes virulence by sustaining optimal levels of the virulence plasmid pINV, enhancing colonization and infection.

This study identifies genetic and metabolic diversity among Enterococcus species in ICU patients, revealing multiple clones, horizontal gene transfer, and challenges in species identification.