UKHSA: Monkeypox Technical Briefing 1 published

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The UK Health and Security Agency has published its first technical briefing for the Monkeypox outbreak in England.


  • England has a level 2 outbreak: Transmission within a defined sub-population with high number of close contacts
  • There are 336 laboratory confirmed cases of monkeypox in the UK
  • 81% of cases in England are London residents
  • 99% of cases are male
  • Median age of confirmed cases was 38 years
  • 151 of the 152 men interviewed identified as gay, bisexual and other men who have sex with men (GBMSM)
  • The current UK monkeypox strain contains 48 single mutations in its genome relative to the 2018 UK monkeypox strain
  • There are 3 mutations in one protein which are classed as high priority
  • There are 4 mutations at medium priority
  • There are 2 mutations of low priority
  • “We cannot yet determine if transmission has stopped increasing”


Monkeypox Technical Briefing 1 – Investigation into monkeypox outbreak in England technical briefing 1 – GOV.UK


The full Monkeypox Technical Briefing published 10th June 2022 can be read online here



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** This post was originally published on June 10, 2022 **