RT Journal Article SR Electronic(1) A1 Cilla, G A1 Montes, M A1 Artieda, J A1 Piñeiro, L A1 Arriola, L A1 Pérez-Trallero, E YR 2011 T1 Measles genotypes D4 and G3 reintroduced by multiple foci after 15 years without measles virus circulation, Gipuzkoa, the Basque Country, Spain, March to June 2011 JF Eurosurveillance VO 16 IS 43 SP 19997 OP DO https://doi.org/10.2807/ese.16.43.19997-en UL https://www.eurosurveillance.org/content/10.2807/ese.16.43.19997-en