The NESEC-led GLOBE Mission Mosquito campaign partnered with the American Philosophical Society to present an interactive webinar exploring their virtual lesson, “A Malignant Tale.” The lesson focuses on Philadelphia’s 1793 yellow fever epidemic (a vector-borne disease). Participants learned the details of how Caspar Wistar Haines and his family experienced the city-wide epidemic. Through letters, they discovered the role of the Free African Society in taking care of Philadelphians during this time of need and the sacrifices they made. Participants made connections between the 1793 epidemic and today, via these personal stories, the roles of essential workers, and the history of science and medicine. The lesson is available here. Ali Rospond, Museum Education Coordinator, American Philosophical Society wrote a blog for the GLOBE Mission Mosquito website about the 1793 yellow fever epidemic.