Confirmed cases of mpox clade Ib in United Kingdom

Update

From 5 February 2025 UKHSA will no longer provide updates on new clade Ib mpox cases on a case-by-case basis. Case numbers will continue to be updated weekly, on a Thursday, within this statistical release.

Current confirmed cases

As of 314 JanuaryFebruary 2025, the UK Health Security Agency (UKHSA) has confirmed 8 9 cases of clade Ib mpox in the UK.

Cases reported by date

The first case was reported on 30 October 2024 with 3 further household contact cases confirmed. A fifth, unrelated travel-associated case was reported on 29 November 2024.

A sixth case was reported on 20 January 2025. A seventh case was reported on 27 January 2025. Both cases had a travel history to Uganda.

An eighth case was reported on 31 January 2025, the individual had a travel history to Uganda and there is no known link to any previous UK cases.

Methods and definitions

A confirmed mpox case is defined as a person with a laboratory-confirmed infection following a polymerase chain reaction (PCR) test.

Mpox surveillance data in England is based on mpox virus test results from the Rare and Imported Pathogens Laboratory (RIPL), which is the UKHSA mpox reference laboratory, and other UK laboratories with mpox testing.

Any counts of confirmed cases in Wales, Northern Ireland, and Scotland will be submitted to UKHSA by Public Health Wales, Public Health Agency Northern Ireland, and Public Health Scotland respectively.

Further information and advice

See GOV.UK for further information on the background of these clades.

UKHSA has published a range of guidance and advice on the epidemiology, symptoms, diagnosis, and management of mpox virus infections as well as technical reports and risk assessments.

Related routine statistics

The UKHSA publishes routine monthly updates on clade IIb mpox cases in the UK.