Outbreak briefing

As of June 1, 2026, two active outbreaks are being monitored globally. The lead outbreak is the Ebola disease caused by Bundibugyo virus, reported in the Democratic Republic of the Congo and Uganda, with 134 confirmed cases, 906 probable cases, and 223 deaths. The second lead outbreak is a Hantavirus outbreak linked to cruise ship travel, affecting multiple locations across eight countries, with 11 confirmed cases, 2 probable cases, and 3 deaths.

The ongoing Ebola outbreak in the Democratic Republic of the Congo and Uganda warrants close surveillance, particularly in neighboring countries. The Hantavirus outbreak linked to cruise ship travel also requires attention, as it has spread across multiple locations, highlighting the need for enhanced monitoring of travel-related cases.