TWiM reveals a study showing that positive interactions among bacteria are far more common than previously thought, and how acquisition of a single gene enabled Yersinia pestis to expand the range of mammalian hosts that sustain flea-borne plague.

Michael and Vincent present Spotlights, brief reviews of classic papers in the Journal of Bacteriology, and explain how a single bacterial species can reverse autism-like social deficits in the offspring of obese mice.

From the ASM Biodefense and Emerging Diseases Research meeting, Vincent speaks with Rebekah and Wyndham about their work on Rift Valley Fever virus and other vector-borne pathogens, and the evolution and pathogenesis of Yersinia pestis, the agent of plague.