期刊
LANCET
卷 364, 期 9431, 页码 365-367出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/S0140-6736(04)16725-1
关键词
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The meningococcal serogroup C conjugate (MCC) vaccine programme in England has successfully controlled the incidence of serogroup C disease, as a result of high short-term vaccine effectiveness and substantial herd immunity. However, the long-term effectiveness of the vaccine remains unknown. We assessed surveillance data from the 4 years since introduction of the programme. Vaccine effectiveness remained high in children vaccinated in the catch-up campaign (aged 5 months to 18 years). However, for children vaccinated in the routine infant immunisation programme, the effectiveness of the MCC vaccine fell to low levels after only 1 year. The number of individuals in these cohorts remains low, but alternative routine immunisation schedules should be considered to ensure high levels of protection are sustained.
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