Evolution of Bartonella

The fascinating journey of Bartonella bacteria reveals their transformation from environmental pathogens to insect gut symbionts, and eventually to vertebrate pathogens. This evolutionary shift is believed to have occurred around the time of the dinosaurs' extinction, highlighting the intricate relationships between arthropods and mammals. The discussion uncovers how these bacteria adapted to thrive within their new hosts, paving the way for complex vector-host dynamics.