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An ongoing large outbreak of measles in Merseyside, England, January to June 2012
R Vivancos1, A Keenan, S Farmer
1Cheshire & Merseyside Health Protection Unit, Health Protection Agency, Liverpool, United Kingdom. roberto.vivancos@hpa.org.uk
Abstract:
From 1 January to 30 June 2012, 359 confirmed and 157 probable cases of measles were reported in Merseyside, England. The most affected age groups were children under five years and young adults from 15 years of age. Most cases have been sporadic. There have been few outbreaks in nurseries; however, no outbreaks have been reported in schools. Of the cases eligible for vaccination, only 3% of the confirmed cases were fully immunised.
Insights
Measles outbreaks in Merseyside, England, affected young children and adults, with only 3% of eligible confirmed cases fully vaccinated. This highlights a significant gap in measles immunisation coverage in the region.
Area of Science:
- Public Health
- Epidemiology
- Infectious Diseases
Background:
- Measles remains a significant public health concern globally.
- Maintaining high vaccination rates is crucial for community immunity.
Purpose of the Study:
- To report on measles cases in Merseyside, England, between January and June 2012.
- To identify affected age groups and assess vaccination status among confirmed cases.
Main Methods:
- Retrospective analysis of reported measles cases.
- Data collection on demographics, case classification (confirmed/probable), and vaccination status.
Main Results:
- 359 confirmed and 157 probable measles cases reported in Merseyside.
- Highest incidence in children under five and young adults (15+).
- Only 3% of eligible confirmed cases were fully immunised.
Conclusions:
- The measles outbreak in Merseyside disproportionately affected unvaccinated children and young adults.
- Low immunisation rates among eligible cases indicate a vulnerability to measles transmission.
- Public health interventions should focus on improving measles vaccination coverage in at-risk populations.
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