Outbreak briefing

As of June 9, 2026, two active outbreaks are being monitored globally. The lead outbreak is a hantavirus outbreak linked to cruise ship travel, affecting eight countries with 11 confirmed cases, 2 probable cases, and 3 deaths. This outbreak is notable for its multi-location spread. The second lead outbreak is an Ebola disease caused by the Bundibugyo virus, confined to the Democratic Republic of the Congo and Uganda, with 515 confirmed cases and no reported deaths.

The ongoing hantavirus outbreak and the large Ebola outbreak in the Democratic Republic of the Congo and Uganda are receiving significant surveillance attention. Authorities and journalists should continue to monitor these outbreaks closely, particularly the hantavirus outbreak due to its multi-location spread and potential for further transmission.