Health officials in the UK have identified a newly evolved variant of mpox after testing a patient who had recently travelled to Asia. Genome analysis showed the infection was a recombinant strain, formed from two existing mpox lineages: clade 1, known to cause more severe illness, and clade 2, the type responsible for the global mpox outbreak in 2022.
The UK Health Security Agency said the discovery was not unexpected, as both strains continue to circulate internationally, but stressed that surveillance is important to understand how the virus may be changing. Experts are now assessing whether the combined variant poses any increased risk.
Mpox – formerly called monkeypox – is related to smallpox and spreads through close physical contact with lesions, contaminated materials like bedding or clothing, and respiratory droplets. Symptoms may take up to three weeks to appear and include fever, headaches, muscle pain, exhaustion, followed by a rash.
While most infections are mild, officials are urging eligible groups to get vaccinated, particularly people with multiple sexual partners or those visiting sex-on-premises venues.
Global monitoring continues after the World Health Organization recorded nearly 48,000 confirmed cases and over 200 deaths this year across 94 countries. Scientists say that if more cases of the new variant appear, it will be crucial to determine how it spreads, how severe it is, and whether current vaccines remain effective.
