3 days ago
Scientists raise red flag after discovering traces of dangerous mosquito-borne disease in new location: 'Already widespread'
A new mosquito-related health scare is making headlines in the United Kingdom, and it's raising alarms far beyond British borders. For the first time, scientists have detected traces of West Nile virus in mosquitoes on British soil.
As reported by the Guardian, genetic material from the virus was identified in two samples of Aedes vexans mosquitoes collected from wetlands near Nottinghamshire in July 2023.
The discovery came from the Vector-Borne Radar program, a joint initiative of the UK Health Security Agency (UKHSA) and the Animal and Plant Health Agency.
"While this is the first detection of West Nile virus in mosquitoes in the UK so far, it is not unexpected as the virus is already widespread in Europe," Dr. Meera Chand, the UKHSA deputy director for travel health, explained.
The virus is a glimpse into how increasing global temperatures are expanding where insects like mosquitoes can thrive and spread disease.
Aedes vexans mosquitoes are already native to the UK, but they haven't typically been hosts for West Nile virus because the temperature hasn't allowed it, although that's starting to change.
At around 86 degrees Fahrenheit, the virus can become infectious inside a mosquito within two to three weeks.
That means hotter weather gives viruses more time to develop and fewer obstacles to transmission.
Although most people infected with West Nile virus don't experience symptoms, about one in five may suffer flu-like effects, and a small percentage may develop serious complications involving the brain or spinal cord.
This discovery follows a growing number of similar health stories. Earlier this year, a mysterious fungal infection affecting dogs was linked to prolonged exposure to heat.
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There have also been reports on how viruses like dengue, once considered rare in Europe or parts of the southern U.S., are now creeping into those regions.
In response, the UK Health Security Agency has strengthened surveillance efforts and issued updated guidance to health care providers.
Health professionals are being urged to test for West Nile virus in unexplained cases of brain inflammation.
Fortunately, there are some easy ways to stay proactive. Planting mosquito-repelling herbs like citronella or lavender can make outdoor spaces more comfortable.
On a bigger scale, reducing air pollution by walking or biking more, switching to electric tools, or unplugging devices when they're not in use can help slow the overheating that allows these viruses to thrive.
In some regions, local leaders are launching targeted mosquito control programs, while researchers are using climate data to better predict and prepare for outbreaks.
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