enquête (5) âge (5) Mexique (5) Age (5) Age (5) Health (4) état (3) anticorps (3) maladie (3) States (3) Women (3) Sex (3) Population (3) Children (3) Blood (3) States (3) Salud (3) maladie (3) puits (2) information (2) analyse (2) famille (2) jeune (2) Children (2) Article (2) Values (2) Rubella (2) Poliomyelitis (2) Persons (2) Measles (2)