A Public Health Emergency of International Concern remains in effect for Bundibugyo virus disease, with 534 confirmed cases reported across the DRC and Uganda as containment efforts face critical gaps. In southeast asia, dengue cases have surged to 33,864 cases and 19 deaths in Sri.Lanka, ahead of the traditional rainy season peak. Yemen is experiencing a severe malaria epidemic with over 22,000 cases in Taiz Governorate alone as of June 2026. In Nigeria, suspected cholera cases in Borno State have reached 4,204, with 39 deaths linked to a contaminated dam. Globally, measles transmission remains a concern, with 75,708 suspected cases and 605 deaths reported in Bangladesh, and over 500 cases in Japan, primarily driven by autochthonous transmission.
Ebola virus disease — Democratic Republic of the Congo and Uganda
Bundibugyo virus disease (DRC, Uganda) is escalating with cross-border spread. As of 8 June: DRC 515 confirmed cases, 91 deaths; Uganda 19 confirmed cases, 2 deaths, plus 1 probable fatal case. Combined: 534 confirmed cases, 93 deaths (case fatality rate 17.4%) and ≥17 recoveries. Africa CDC and WHO launched a joint continental preparedness and response plan on 5 June, requesting US$518 million.
Dengue — Southeast Asia
Sri Lanka is reporting a rapid nationwide increase with 33,864 cases and 19 deaths, concentrated in the Western, Sabaragamuwa, and Southern provinces. Authorities have launched special dengue control programmes across 74 divisions. Bangladesh reports ongoing transmission with 77 new cases in the last 24 hours, bringing 2026 year to date to 3,384 cases and 6 deaths.
Malaria — Yemen
The country is experiencing a severe, geographically expanding malaria epidemic, with 116,000 confirmed cases reported nationally in 2025. The disease is spreading into previously low-risk areas amid active conflict and health system collapse. In Taiz Governorate specifically, more than 22,000 cases have been reported as of June 2026. WHO warns that transmission is likely to escalate further with the onset of the summer season.
Cholera — Nigeria
As of June 5, 2026, suspected cholera cases in Borno State have increased to 4,204, including 39 deaths. The outbreak, which has affected seven Local Government Areas, is reportedly triggered by a contaminated community dam and exacerbated by the intensifying rainy season.
4,204 suspected cases and 39 deaths in Borno after community dam contamination
The ESCMID-AUMC Epi Alert, a strategic collaboration between the ESCMID Emerging Infections Subcommittee and the Center of Tropical Medicine and Travel Medicine of Amsterdam University Medical Center (AUMC) that integrates expertise and resources to advance emerging infectious diseases surveillance and intelligence sharing. This collaboration integrates ESCMID's extensive international network and emerging infections expertise with AUMC's proven surveillance capabilities, led by Dr. Abraham Goorhuis and the AUMC team and other collaborators form European Institutions.
The Epi Alert aims to be a weekly publication. The briefings are curated by infectious disease specialists prioritising data from trusted sources (such as Beacon, H-Radar, Outbreaknews, WHO, ECDC, CDC) based on potential impact, geographic region and urgency/relevancy to clinical practice. It aims to provide concise summaries for busy healthcare professionals with direct links for further investigation and transparency.
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