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Measles outbreak linked to European B3 outbreaks, Wales, United Kingdom, 2017

Jonny Currie1, Llion Davies1, Joanne McCarthy1

  • 1Public Health Wales, Cardiff, Wales, United Kingdom.

Euro Surveillance : Bulletin Europeen Sur Les Maladies Transmissibles = European Communicable Disease Bulletin
|October 26, 2017
PubMed

Insights

A 2017 measles outbreak in Wales, linked to European cases, highlights ongoing risks from imported measles. Public health must remain vigilant, especially in healthcare and education settings, to prevent further spread.

Area of Science:

  • Public Health
  • Infectious Diseases
  • Epidemiology

Background:

  • The United Kingdom eliminated endemic measles transmission in 2016.
  • Sporadic imported measles cases continue to pose a risk.
  • Measles genotype B3 outbreaks have been reported across Europe.

Purpose of the Study:

  • To summarize a B3 measles genotype outbreak in south-east Wales.
  • To identify transmission links with other European outbreaks.
  • To extract lessons learned for future measles control.

Main Methods:

  • Case definition and investigation of suspected measles cases.
  • Genotyping of the measles virus.
  • Contact tracing and epidemiological analysis.
  • Review of transmission settings, including healthcare and education.

Main Results:

  • Seventeen confirmed and one probable case of measles occurred between May and September 2017.
  • The outbreak was linked to the B3 measles genotype, with connections to other European cases.
  • Transmission primarily occurred in education and healthcare settings.
  • Six confirmed cases attended healthcare facilities while infectious, highlighting potential for nosocomial spread.

Conclusions:

  • Imported measles cases can trigger local outbreaks even after elimination of endemic transmission.
  • Healthcare and education settings are key environments for measles transmission.
  • Prompt isolation and robust infection control measures are crucial to prevent wider dissemination.
Keywords:
United KingdomWalesair-borne infectionsmeaslesoutbreaksviral infections

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