Record-breaking UK heatwave ‘perfect’ for explosion of bloodthirsty mosquitoes

Mosquitoes are likely to be out in full force this week during the dusk hours, after a leading expert warned the hot weather we are having are perfect conditions for the little critters

Current UK weather conditions are perfect for a surge in mosquitoes, leading to bites, an expert has warned. Those capable of carrying nasty illnesses, such as dengue fever and Zika, could also take hold in the UK in the coming years due to climate change, according to Dr Mojca Kristan, assistant professor in medical entomology at the London School of Hygiene and Tropical Medicine (LSHTM).

She said: ” Weather conditions in the UK at the moment are perfect for mosquitoes. They like warmth as well as standing water to lay their eggs in. May was too dry, but we’ve had rain in June so there’s water around and, as the weather continues to warm up, I would expect mosquitoes to emerge and start biting to get the blood they need to breed.

She suggested people could take precautions to ensure they are not bitten. “To protect yourself from bites, wear insect repellent and cover your skin with long sleeves, plus wear socks in the evening as mosquitoes like biting around ankles,” she said.

According to Dr Kristan, invasive species capable of transmitting viruses such as dengue, chikungunya and Zika, including Aedes albopictus (Asian tiger mosquito) and Aedes aegypti (Egyptian mosquito), are currently not present in the UK, though eggs of Aedes albopictus have been detected here.

However, some of these viruses, such as dengue and chikungunya, are present in Europe, especially the Mediterranean. Modelling studies suggest that, by the 2060s, the climate in London and surrounding areas will most likely help the endemic transmission of dengue fever.

Malaria is currently not endemic in the UK, but around 2,000 imported cases are reported annually in travellers returning from high-risk, tropical, or subtropical areas. Experts still believe it is unlikely that malaria will become endemic in the UK.

Dr Kristan said: “At the moment there’s a low risk of bites from UK mosquitoes spreading serious illness, but we have to be alert to the threat of new disease-carrying mosquito species as climate change makes Britain a more attractive place for mosquitoes to survive and thrive.”

Dengue symptoms can be similar to flu and include a high temperature, severe headache, pain behind the eyes, muscle and joint pain and feeling sick.

Chikungunya symptoms include fever, joint pain, headache, muscle pain, joint swelling and rash. Most people with Zika suffer a mild illness but it is serious in pregnant women and can cause stillbirth, miscarriage, problems with development and unusually small heads. Mosquitoes rely on standing water to lay their eggs.

It then needs to be warm enough for the eggs to hatch, which can take just a few days if temperatures are high enough. Female mosquitoes bite in order to feed on blood which they need to develop eggs