An invasive species of mosquito known as Aedes aegypti, which can spread serious tropical diseases such as dengue, chikungunya, and the Zika virus, has been found breeding in homes in east London. This marks the first time the species has been identified breeding in the United Kingdom, and the fourth time it has been detected in the country overall. The UK Health Security Agency (UKHSA) reported the discovery through its mosquito watch surveillance program. According to the agency, the mosquitoes may have arrived in the UK via vehicles, luggage, or imported plants. While they can survive in a suitable climate, the UK’s typically cooler conditions are not ideal for the species to establish itself long-term. However, the UKHSA warned that climate change may increase the likelihood of such mosquitoes being found in the UK in the future. David Smith, who works as an advocacy and social change manager at the charity Buglife, noted that the UK’s rapidly warming climate is making it easier for exotic and invasive species to take hold. A study published earlier this year found that chikungunya, a tropical illness known for causing severe joint pain and fever, can now be transmitted in most of Europe due to rising temperatures linked to the climate crisis. Smith stressed the importance of the UK government improving biosecurity measures and surveillance, especially around the movement of items like potted plants and soils, which can unknowingly carry invertebrates across borders. The UKHSA has taken steps to control the mosquito population by targeting and destroying larvae. The affected area will be closely monitored to ensure that no further mosquitoes or larvae remain. Residents have been advised to remove standing water from their gardens and outdoor spaces, such as from buckets, containers, paddling pools, and plant pots, to reduce potential breeding sites for all types of mosquitoes. The agency emphasized that the risk to the public is currently low, as there is no evidence that the mosquitoes in east London have caused any human infections.