New research published by investigators in the Journal of the American Medical Association highlights a growing proportion of children who did not receive the measles, mumps, and rubella (MMR) vaccine by age 2 years, with the trend beginning…

New research published by investigators in the Journal of the American Medical Association highlights a growing proportion of children who did not receive the measles, mumps, and rubella (MMR) vaccine by age 2 years, with the trend beginning…