Dengue worldwide overview

Situation update, August 2026

Since the beginning of 2026, and as of 31 July 2026, over 1.5 million cases of dengue and over 500 dengue-related deaths had been reported globally according to information from publicly available sources.

Three-month dengue virus disease case notification rate per 100 000 population, May-July 2026

Three-month dengue virus disease case notification rate per 100 000 population, May-July 2026

Detailed overview

Over 90 countries/ territories have reported dengue cases between January and July 2026. An overview based on publicly available information from official sources and reports from different regions highlighting trends in different countries/ territories is presented below. The country/ territory trends summarised are based on data availability at the time the report was prepared; more detailed analyses are therefore only provided for countries/ territories with sufficient data.

Americas

In the Americas, as of week 26 of 2026 (update: 23 July 2026), 1 373 756 dengue cases have been reported, of which 28.9% were laboratory-confirmed, according to the WHO PAHO report published on 23 July 2026. The current reported cases are 61% fewer than during the same period in 2025 and 67% below the five-year average. While all four serotypes have been reported in the region to date in 2026, their distribution varies across the different countries of PAHO (Report on the epidemiological situation of dengue in the Americas).

South-East Asia

According to the WHO SEARO epidemiological bulletin published on in June and July, since July 2025 and as of July 2026, dengue has been reported in Bangladesh, Bhutan, India, Maldives, Myanmar, Nepal, Sri Lanka, Thailand, and Timor-Leste. Available information on epidemiological trends is summarised below:

Western Pacific Region

In the WHO Western Pacific Region, dengue cases have been reported by several countries according to the report of 23 July (WHO WPRO Dengue Situation Update #750: 23 July 2026). Available information from the WHO WPRO report and national official reports on ongoing trends are summarised below:

Africa

According to the Africa CDC Epidemic Intelligence Report of 19 July 2026, a total of 3 650 cases have been reported in the continent from the Central African Republic (1), Kenya (1 583), Mali (1 861), Mauritania (38), Nigeria (95) and Senegal (72).

EU/EEA

Since the beginning of 2026 and as of 05 August 2026, France was the only European country to report locally acquired dengue transmission, with one locally acquired dengue case identified.

For more information on locally acquired dengue cases reported in the EU/EEA excluding the outermost regions by France, please visit the dedicated ECDC website. With regards to EU/EEA outermost regions, a summary of recent trends is presented below:

Global overview

Since the beginning of 2026 and as of 31 July 2026, over 1.5 million cases of dengue and over 500 dengue-related deaths had been reported. This corresponds to a decrease compared with the same period in 2025 (Communicable disease threats report, 19-25 July 2026 and Communicable disease threats report, 16-22 August 2025).

Note: the data presented in this report originate from both official public health authorities and non-official sources, such as news media, and depending on the source, autochthonous and non-autochthonous cases may be included. Data completeness depends on the availability of reports from surveillance systems and their accuracy, which varies between countries. All data should be interpreted with caution and comparisons, particularly across

countries, should be avoided due to under-reporting, variations in surveillance system structure, different case definitions from country to country and over time, and use of syndromic definitions

ECDC assessment

Risk assessment

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.