The arrival in the US of plasmid-mediated resistance to colistin antibiotics, a last line of defense against many gram-negative bacilli, and a quorum sensing system in a eukaryote are topics of this episode hosted by Vincent, Michael, and Michele.

Harris joins Vincent, Elio, and Michael to describe multiplex automated genome engineering, a method for targeting many modifications in a population of bacterial cells.

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.

Vincent and Elio marvel in the finding that a phage tail-like structure from a marine bacterium stimulates tubeworm metamorphosis, and reveal Ophidiomyces as a cause of snake fungal disease.