The pathogenic bacterium Vibrio cholerae typically has two circular chromosomes. Here, Cuénod et al. analyse 467 clinical isolates and identify several independent chromosome fusion events that are likely transmissible within a household, can be stable for 200 generations under laboratory conditions, and do not substantively affect bacterial growth, virulence factor expression, or biofilm formation.
- Aline Cuénod
- Denise Chac
- B. Jesse Shapiro
