West Nile Virus Detected in UK Mosquitos

Research undertaken by the UK Health Security Agency (UKHSA) has found fragments of the West Nile Virus in mosquitos collected from Retford, Nottinghamshire. This marks the first time that such fragments have been identified in the UK.

The risk of West Nile Virus remains low, with only 2 out of 200 mosquito batches spread across the UK testing positive for fragments of the virus. Additionally, to date, there have been no recorded cases of locally acquired West Nile virus in humans in the UK.

Measures have been implemented to limit the spread of mosquitoes potentially carrying diseases such as West Nile virus, including surveillance programmes at transport hubs where mosquitoes may arrive in cars and lorries entering the UK. Action has also been taken to minimise the habitat of mosquitoes, which are commonly found in wet woodland areas, ponds, ditches and marshes. This is done through reshaping wetlands and reducing flooding risks. Despite actions taken, evidence shows that infections and diseases traditionally confined to warmer regions are continuing to spread to wider regions as climate change causes northern areas to become warmer and become more suitable habitats for mosquitoes and other disease vectors.

As a result, it is important that employers in the UK are aware of the risks associated with infectious diseases, especially if their employees are working in higher-risk environments or roles, for example, those working with animals. Diseases caused by micro-organisms like West Nile Virus are subject to COSHH regulations. Employers should carry out a COSHH assessment if there is a risk of employees being exposed. This should involve assessing the risks, considering measures to control the risk, and providing information to employees about the risks and controls.

The HSE information has specific information about the virus and control measures.

If you have any questions or would like support with managing issues at your workplace, please speak to your usual contact or get in touch using the form below.