Dr. Carl Boodman discusses four cases of trench fever from Bartonella quintana which is transmitted by body lice. Trench fever was common during the First World War and killed millions of people. In modern times, it is rare, but outbreaks tend to be associated with homelessness, poor living conditions or a history of severe alcohol use disorder or IV drug use. Dr. Boodman first talks about a patient who presented to the emergency department with endocarditis from B. quintana. He then discusses the three other linked cases that were diagnosed over the following weeks. Dr. Carl Boodman is a fifth year medical resident in a combined infection disease and medical microbiology program at the University of Manitoba in Winnipeg, Manitoba.The practice article he co-authored is published in CMAJ: https://www.cmaj.ca/lookup/doi/10.1503/cmaj.201170Podcast transcript: https://www.cmaj.ca/transcript-201170-----------------------------------This episode is brought to you by MD Financial Management and Scotiabank. Together, we’re able to provide physician-focused advice and unique financial solutions tailored to your needs at every stage of your medical career. Find out more about how we can help you, visit bit.ly/2Grtd5H-----------------------------------This podcast episode is brought to you by Audi Canada. The Canadian Medical Association has partnered with Audi Canada to offer CMA members a preferred incentive on select vehicle models. Purchase any new qualifying Audi model and receive an additional cash incentive based on the purchase type. Details of the incentive program can be found at www.audiprofessional.ca.-----------------------------------Subscribe to CMAJ Podcasts on Apple Podcasts or your favourite podcast app. You can also follow us directly on our SoundCloud page or you can visit www.cmaj.ca/page/multimedia/podcasts.