On 17 May 2026, the World Health Organization (WHO) declared the Ebola virus disease outbreak caused by Bundibugyo virus in the Democratic Republic of the Congo (DRC) and Uganda a Public Health Emergency of International Concern.
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Surveillance and monitoring
This issue of the ECDC Communicable Disease Threats Report (CDTR) covers the period 8 - 14 August 2026, and includes updates on Ebola, chikungunya, dengue, West Nile Virus infection, Crimean-Congo haemorrhagic fever, Vibrio, respiratory virus epidemiology in the EU/EEA, World Pride, mpox, and expert deployments.
Communicable disease threats report, 8 - 14 August 2026, week 33
English (2.41 MB - PDF)
Surveillance and monitoring
This report gives an overview of the countries and areas where dengue cases – and their corresponding case numbers - have been reported to the European surveillance portal for infectious diseases (EpiPulse).
Surveillance and monitoring
Update providing weekly overview of the countries and areas where chikungunya virus disease cases have been reported.
Scientific and technical publications
This report presents data on mpox cases reported to the European Surveillance System (EpiPulse Cases). EU/EEA countries report case based data to ECDC on diagnosed mpox cases. For case numbers by countries, Western Balkans and Türkiye are included.
Update providing weekly overview of the countries and areas where dengue cases have been reported.
Podcast
In this episode of ECDC: On Air, Dr Celine Gossner, ECDC expert in food, water, vector-borne and zoonotic diseases, and Aleksandra Kaźmierczak, expert in Climate Change and Human Health at the European Environment Agency (EEA), discuss how a changing climate is reshaping health across Europe.
Podcast
In this episode of ECDC: On Air, we talk with Angeliki Melidou and Katriina Willgert, who give us an overview of the current avian influenza situation in Europe, the factors that could change the risk to humans, and how countries are preparing for potential human cases.
Update providing weekly overview of the countries and areas where chikungunya virus disease cases have been reported.
Surveillance and monitoring
Monthly updates with the latest reports on West Nile virus cases in Europe.
Every month ECDC provides detailed epidemiological overview of the worldwide transmission of chikungunya virus disease in its weekly threat report (Communicable Diseases Threat Report).
The environmental conditions in most areas of the EU/EEA where Ae. albopictus or Ae. aegypti are established are now favourable for mosquito activity and virus replication in mosquitoes; therefore, locally acquired dengue cases may occur in the coming weeks.
Map
Since the start of 2026, and as of 5 August 2026 (data collection period 3–5 August, data available up to 28 July), 219 522 chikungunya virus disease (CHIKVD) cases and 81 associated deaths have been detected in 25 countries, excluding EU/EEA countries and territories.
Surveillance and monitoring
The scope of this document is to provide a thematic prioritisation and a framework to guide the choice of VMP studies to be conducted.
Vaccine Monitoring Platform (VMP) research agenda
English (325.4 KB - PDF)
Assessment
In this scoping review, covering publications from January 2000 to June 2025, probable or certain transmission cases of arbovirus through substances of human origin SoHO were identified for WNV, DENV and Zika virus.
Transmission of selected arboviruses through substances of human origin (SoHO) - A scoping review
English (2.16 MB - PDF)
Surveillance and monitoring
This issue of the ECDC Communicable Disease Threats Report (CDTR) covers the period 1 - 7 August 2026, and includes updates on Ebola, chikungunya, dengue, West Nile Virus infection, Crimean-Congo haemorrhagic fever, Vibrio, respiratory virus epidemiology in the EU/EEA, World Pride, Middle East respiratory syndrome coronavirus, and expert deployments.
Communicable disease threats report, 1 - 7 August 2026, week 32
English (7.33 MB - PDF)
Data
This interactive dashboard provides a weekly integrated epidemiological summary for influenza, RSV and SARS-CoV-2.
Historical data for 2007-2024 on local transmission of chikungunya virus disease in mainland EU/EEA.
Overview of EU/EEA countries and areas with reported CCHF cases in 2026.
Weekly updates with the latest reports on West Nile virus cases in Europe updated every Friday, during the transmission season.
This list below shows the current accommodation sites in EU/EEA countries with which clusters of Legionnaires’ disease have been identified but where the European Legionnaires’ disease Surveillance Network (ELDSNet) is unable to assess the risk of Legionella infection, or where ELDSNet believe there may be increased risk to travellers.
Surveillance and monitoring
This EQA was organised within the IBDLabNet framework on behalf of ECDC to assess current EU/EEA laboratory capacity for the detection and characterisation of S. pneumoniae in both non-culture and culture-based settings.
External quality assessment for identification, antimicrobial susceptibility testing and molecular typing of Streptococcus pneumoniae, 2026
English (2.3 MB - PDF)
Surveillance and monitoring
This external quality assessment was organised within the IBDLabNet framework to assess current EU/EEA laboratory capacity for the diagnosis and characterisation of N. meningitidis in both non-culture and culture-based settings, and to identify areas requiring further harmonisation or technical support.
External quality assessment for identification, antimicrobial susceptibility testing and molecular typing of Neisseria meningitidis, 2026
English (1.79 MB - PDF)
Surveillance and monitoring
This external quality assessment (EQA) was organised within the IBDLabNet framework on behalf of the ECDC to assess current EU/EEA laboratory capacity for the detection and characterisation of H. influenzae in both non-culture and culture-based settings.
External quality assessment scheme for identification, antimicrobial susceptibility testing and molecular typing of Haemophilus influenzae, 2026
English (1.64 MB - PDF)
Surveillance and monitoring
This issue of the ECDC Communicable Disease Threats Report (CDTR) covers the period 27 - 31 July 2026, and includes updates on Ebola, West Nile Virus infections, Crimean-Congo haemorrhagic fever, dengue, avian influenza A(H9N2), expert deployment, cholera, chikungunya virus disease, Vibrio, World Pride, and an overview of respiratory virus epidemiology in the EU/EEA.
Communicable disease threats report, 25 - 31 July 2026, week 31
English (3.86 MB - PDF)