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Outbreak of aseptic meningitis and mumps after mass vaccination with MMR vaccine using the Leningrad–Zagreb mumps strain
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- Abstract:
Data from routine surveillance during two mass immunisation campaigns (MIC) with Measles–mumps–rubella (MMR)vaccine using Leningrad–Zagreb mumps strain in two states in Brazil were analysed to estimate the risk of vaccine-related meningitis and mumps. Increase in the incidence of the two diseases was observed in both states, 3 weeks after the vaccination campaigns. The estimated number of doses applied per one case of vaccine-related meningitis ranged from 6199 (95% CI: 4854–8058) to 19,247 (95% CI: 12,648–29,513) depending on the diagnostic criteria used and state. It was 300 doses (95% CI: 286–317) for each case of mumps. The implications for vaccination policy are discussed. [Copyright &y& Elsevier]
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