Invasive Mosquitoes Threaten UK: First Sightings Since 2019
The UK has seen an increase in sightings of invasive mosquito species, raising concerns about potential disease transmission. The UK Health Security Agency (UKHSA) and the Centre for Climate and Health Security have been monitoring these developments.
Between 2005 and 2021, the Mosquito Recording Scheme (MRS) logged 286 reports, all involving native UK species. However, in September 2023, Egyptian mosquito eggs were discovered at a freight storage facility near Heathrow Airport. This was followed by sightings of Aedes aegypti and Aedes albopictus, two disease-carrying species historically limited to subtropical and tropical regions.
These species can transmit diseases like yellow fever, dengue, chikungunya, Zika, and dirofilariasis. Their appearance in the UK is concerning, as rising temperatures and milder winters may facilitate their survival and reproduction. In August 2024, tiger mosquitoes were spotted in Kent, the first sighting since 2019.
Each detection of these invasive mosquitoes in 2023 and 2024 has triggered enhanced local surveillance and control measures. The UKHSA continues to monitor the situation through the MRS, ensuring the public is protected from potential health risks.
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