In a nationwide group of Danish children, receipt of the live measles, mumps, and rubella (MMR) vaccine vs inactivated diphtheria, tetanus, pertussis, polio, and Haemophilus influenzae type b as the most recent vaccine was associated with a lower rate of hospital admissions for any infections, but particularly for lower respiratory tract infections, according to a study in the February 26 issue of JAMA.
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