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ANOTHER case of a more dangerous mpox strain has been detected in England, the UK Health Security Agency has announced.

An unnamed person in London is the eighth case of the clade 1b variant in the country, after the first back in autumn.

a sign for the royal free hospital in london
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The new case is being treated at a specialist care facility at the Royal Free Hospital High Consequence Infectious Diseases unit
a poster showing the different symptoms of mpox
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Signs and symptoms of mpox

They are being treated at a specialist care unit at the Royal Free Hospital High Consequence Infectious Diseases unit, in North London.

This is the same facility where imported cases of Ebola were treated in 2015. 

Despite the rise in mpox infections in the UK since October 2024, health chiefs insist the risk to the UK population ";remains low".

The person had recently returned from Uganda, where the disease is more widespread.

Read more on mpox

UKHSA chiefs are testing and offering vaccination to their close contacts.

The new case comes as the NHS ramps up its efforts to protect Brits from the virus, by opening 12 new mpox vaccination sites across England.

From this week, people in every region of England will now have access to the jab, aimed at those most at risk of contracting the infection.

Previously, the vaccine was only available to eligible individuals in London, Manchester, and Brighton.

Dr Meera Chand, from the UKHSA, said: "The risk to the UK population remains low.

"Close contacts have been identified and offered appropriate advice in order to reduce the chance of further spread."

UK could see ‘explosion’ of mpox cases in just TWO WEEKS – as threat of ‘double outbreak’ grows

The new mpox variant appears to be more contagious than the one that caused a UK outbreak in 2022, according to .

Britain’s first case of the new strain was found in late October and there have been patients in London, Leeds and East Sussex.

Germany also reported its first case in October, following Sweden’s first case in August.

Belgium reported two cases in December 2024, and France a single case this month.

Mpox, previously known as monkeypox, is a viral infection that causes flu-like symptoms and pus-filled lesions.

The new clade 1b variant started spreading rapidly in the Democratic Republic of Congo (DCR) last year.

There have been cases reported in Burundi, Rwanda, Uganda, Kenya and India.

Since then, it has infected more than 25,000 people and is responsible for more than 1,000 deaths.

Mpox symptoms - and those easily missed

Pharmacist at Chemist Click, Abbas Kanani, has shared with The Sun the symptoms of mpox to look out for.

  1. High temperature
  2. Headache
  3. Muscle aches
  4. Backache
  5. Swollen glands
  6. Shivering
  7. Exhaustion
  8. Joint pain
  9. Anal bleeding

Mr Kanani said: “Around one to five days after the first symptoms, a rash on the face usually appears. 

“Its appearance of raised spots and small blisters filled with fluid can be mistaken for chickenpox and tends to spread to other parts of the body including genitals, anus and mouth. 

“Anal bleeding and pain may also be experienced.”

The most common symptom, according to Mr Kanani, is typically the skin rash which can last two to four weeks.

He said for some people the first symptom may be a rash, while others may have different symptoms first.

But one symptom commonly missed, Kanani warned, is swollen glands or lymph nodes. 

He explained: “Swollen glands or lymph nodes can be commonly mistaken for other causes and are not always obvious, particularly if there is mild swelling or it is deep in the body. 

“Also, this symptom can be missed because the rash tends to be the most prominent symptom of mpox.”

Mpox lesions at various stages.
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This prompted the World Health Organisation (WHO) to name the increasing spread of the disease a global health emergency for the second time in two years.

Mpox mostly spreads via close contact with infected people, including through sex.

Common symptoms include a skin rash or pus-filled lesions which can last two to four weeks.

It also can cause fever, headaches, muscle aches, back pain, low energy and swollen lymph nodes.

Most cases are mild but it can be deadly.

READ MORE SUN STORIES

The clade 1b strain of mpox was discovered by scientists earlier this year, who traced it to a Congolese mining town.

Scientists from the Africa Centres for Disease Control and Prevention (Africa CDC) declared a public health emergency over the new strain in August.

Can I get the jab?

Twelve new mpox vaccination sites have opened across England, making it easier for eligible people to get protected.

From this week, every region will be able to offer the vaccine for those at increased risk of getting the infection.

Previously, it was only being available to those eligible in London, Manchester and Brighton.

You may be eligible for the mpox vaccine if you are a man who has sex with men and have multiple partners, participate in group sex, or attend sex-on-premises venues.

Staff at these venues may also be eligible.

Vaccination appointments will be available at the sites listed on the , with the number expected to increase.

The new locations are:

  • Birmingham
  • Nottingham
  • Sheffield
  • Sunderland
  • Hull
  • Leeds
  • Liverpool
  • Blackpool
  • Southampton
  • Bristol
  • Exeter
  • Hatfield, Hertfordshire

This is in addition to 19 sites already vaccinating in:

  • London
  • Greater Manchester
  • Brighton
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