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Emerg Infect Dis. 2011 Apr;17(4):661-7; quiz 766. doi: 10.3201/eid1704.101461.

Mumps complications and effects of mumps vaccination, England and Wales, 2002-2006.

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Health Protection Agency Centre for Infections, London, UK.


We analyzed data from hospital admissions and enhanced mumps surveillance to assess mumps complications during the largest mumps outbreak in England and Wales, 2004-2005, and their association with mumps vaccination. When compared with nonoutbreak periods, the outbreak was associated with a clear increase in hospitalized patients with orchitis, meningitis, and pancreatitis. Routine mumps surveillance and hospital data showed that 6.1% of estimated mumps patients were hospitalized, 4.4% had orchitis, 0.35% meningitis, and 0.33% pancreatitis. Enhanced surveillance data showed 2.9% of mumps patients were hospitalized, 6.1% had orchitis, 0.3% had meningitis, and 0.25% had pancreatitis. Risk was reduced for hospitalization (odds ratio [OR] 0.54, 95% confidence interval [CI] 0.43-0.68), mumps orchitis (OR 0.72, 95% CI 0.56-0.93) and mumps meningitis (OR 0.28, 95% CI 0.14-0.56) when patient had received 1 dose of measles, mumps, and rubella vaccine. The protective effect of vaccination on disease severity is critical in assessing the total effects of current and future mumps control strategies.

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