The state of Iowa recently reported a fatal case of Lassa fever, only the ninth reported case in the United States in the last 55 years. But it’s also a sign of larger-than-reported outbreaks overseas — a worrisome trend for a disease with high pandemic potential.

A recent Lassa fever fatality in Iowa is a reminder of the need for better understanding of the disease — and for a Lassa vaccine. Learn more in the latest edition of Outbreak Insider.