Health officials in England have identified a new mpox variant after a recent traveller from Asia tested positive for the virus. Sequencing shows it is a recombinant form, combining traits from clade 1, known for more severe illness, and clade 2, the less aggressive strain behind the 2022 global outbreak.
The UK Health Security Agency says further analysis is underway, noting that viral evolution is expected as both lineages continue to circulate. Experts emphasise that most mpox cases remain mild, but the emergence of a recombinant strain highlights the need for continued monitoring and vaccination among at-risk groups.
Mpox spreads through close physical contact, infected materials such as bedding or clothing, or respiratory droplets. Symptoms may take up to three weeks to appear and include fever, headache, muscle pain and a characteristic rash.
The World Health Organization recorded nearly 48,000 cases worldwide this year, mostly linked to outbreaks in central Africa. England continues offering vaccination to groups at higher exposure risk, including people with multiple sexual partners or those visiting sex-on-premises venues.
Scientists say more cases will need to be observed to assess whether this new strain behaves differently, but call the discovery a reminder that mpox remains capable of evolving.
