Michael Osterholm

Michael Osterholm is an American epidemiologist and founding director of the Center for Infectious Disease Research and Policy (CIDRAP) at the University of Minnesota, a post he has held since 2001. He is a former Minnesota State Epidemiologist and has served on the US National Science Advisory Board for Biosecurity. Osterholm is among the most prominent outbreak commentators in the United States, known for blunt risk communication and a record of raising alarms before institutional consensus catches up. He has advised multiple US administrations on pandemic preparedness and is a regular adviser to CDC and WHO on influenza and novel-pathogen response. CIDRAP's news and analysis service operates as one of the most widely read free pandemic intelligence resources for public health professionals globally.

In the 2026 Bundibugyo Ebola outbreak, Osterholm has tracked the trajectory as a case study in response failure against known benchmarks. The outbreak crossed 1,094 confirmed cases and 277 deaths by 24 June 2026, becoming the largest Bundibugyo outbreak on record by a factor of more than seven over the 2007 discovery event, with isolation of confirmed patients sitting at roughly 35% and declining, FAR below the 70% threshold CDC modelling identifies as necessary to collapse worst-case trajectories. Earlier in the outbreak, Osterholm assessed the MV Hondius Andes hantavirus cluster's incubation timeline, concluding that the 10-to-20-day incubation window for Hantavirus Cardiopulmonary Syndrome pointed to pre-boarding exposure in the Patagonian port environment rather than transmission at sea, framing the contact-tracing scope around port workers and the wider Antarctic tourism infrastructure rather than solely fellow passengers. His broader concern, articulated repeatedly through CIDRAP's analysis service, is that the structural conditions enabling both clusters, fragmented surveillance and slow response, represent a persistent global deficit rather than one-off failures.