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First domestic case of chikungunya recorded in mainland France in 2025: Prevention tips
Hundreds of cases have been imported in recent months after an outbreak in Réunion. The disease is spread by tiger mosquitoes that are now prevalent in France
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Surge in imported dengue fever cases to France from overseas
There are concerns that tiger mosquitoes will spread the disease within the country
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‘Anti-mosquito spraying must be allowed to resume in rural France’
Mosquito health warnings are useless unless the government does more to protect residents from the disease carrying insects, says reader
Dengue fever cases set to potentially rise in France
The government is monitoring cases closely over summer, when the risk is highest

Some 46 cases of dengue fever were diagnosed in mainland France in May this year, new figures from the country’s health authority show.
All were ‘imported’ cases (as opposed to those caused by mosquitoes from France). The figures from Santé publique France also showed one imported case of chikungunya – another mosquito-borne infection – between May 1 and 26.
France faces a rise in mosquito-borne viral diseases in the coming years so the health authority is coordinating enhanced seasonal surveillance of cases between May 1 and November 30 when the risk is highest.
Last summer France reported 65 cases of indigenous dengue fever. The spread of the tiger mosquito, which can transmit the disease, continues to alarm authorities with the mosquito now present in ten times as many departments as in 2010.
The authority says outbreaks are likely to recur, increase in size and affect new areas due to weather extremes, urbanisation and more travel.
Data showing the number of tick bites in different regions of France has been published at tinyurl.com/tick-bite. It is part of research to better understand ticks’ behaviour and the diseases they carry. People can report bites both to themselves and their pets.
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