title: Outbreak of mumps associated with poor vaccine efficacy - Oporto Portugal 1996.
abstract: Vaccination against mumps in Portugal began in 1987, with the introduction of the combined measles, mumps, and rubella vaccine (MMR) in the national vaccination programme (Programa Nacional de Vacinacao: PNV) for both sexes at 15 months. In November 1990,
authors.affiliation: Centro Regional de Saude Publica do Norte, Portugal.
authors.forename: G
authors.initials: G
authors.lastname: Goncalves
authors.forename: A
authors.initials: A
authors.lastname: De Araujo
authors.forename: M.L.
authors.initials: ML
authors.lastname: Monteiro Cardoso