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Dramatic decline of serogroup C meningococcal disease incidence in Catalonia (Spain) 24 months after a mass vaccination programme of children and young people
Salleras, L, Dominguez, A, Prats, G, Parron, I, Munoz, P
STUDY OBJECTIVES—The objective of this study was to evaluate the effectiveness of a mass vaccination programme carried out in Catalonia (Spain) in the last quarter of 1997 in response to an...