In 2023, there were 130 locally acquired cases of dengue reported in the EU/EEA, and 71 cases were reported in 2022. This is a significant increase compared to the ten-year period 2010-2021, where the total number of locally acquired cases was 73 for the whole period. Imported cases are also on the rise with 1 572 reported cases in 2022 and over 4 900 cases in 2023.
This is the highest number of imported dengue cases reported since the start of the surveillance at the EU level in 2008. In the first months of 2024, several countries have reported substantial increases in number of imported dengue cases, which could suggest that the numbers in 2024 might become even higher. For West Nile virus, in 2023, EU/EEA countries reported 713 locally acquired human cases in 123 different regions of nine EU countries.
Twenty-two of these regions were reported as places of infection for the first time in 2023; 67 deaths were also reported. The reported case count is lower than that of 2022, with 1 133 human cases, but the number of affected regions is the highest since the peak in 2018, indicating a wide geographical circulation of the virus. , known for transmitting dengue, chikungunya, and Zika viruses, is spreading further north, east, and west in Europe, and now has self-sustaining populations across 13 EU/EEA countries.
, a vector of yellow fever, dengue, chikungunya, and Zika viruses recently established itself in Cyprus. Its potential for establishment in other parts of Europe is co.
