Key Points

Reports on the rise in Hauts-de-France:

• 2023: 92 probable or confirmed cases of dengue.

• 2024: 125 probable/confirmed cases of dengue and 1 probable/confirmed case of chikungunya.

• All cases were imported.

• Mostly originating from the Caribbean.

• The departments of Aisne (since the 2018 season) and Oise (since the 2024 season) are considered to have low populations of the tiger mosquito.

• For both seasons, nearly half of the cases are residents of the Nord department.