Tablets › Proirix Image 1 of 1 Proirix $50,000.00 Priorix is a live-attenuated combination vaccine used to prevent measles, mumps, and rubella in individuals 12 months of age and older. Add To Cart Added! Priorix is a live-attenuated combination vaccine used to prevent measles, mumps, and rubella in individuals 12 months of age and older.