In a nationwide group of Danish children, receipt of the live measles, mumps, andrubella (MMR) vaccine on schedule after vaccination for other common infections 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 ofJAMA.

Childhood vaccines are recommended worldwide, based on their protective effect against the targeted diseases. However, studies from low-income countries show that vaccines may have nonspecific effects that reduce illness and death from non-targeted diseases, according to background information in the study. Such nonspecific effects of vaccines might also be important for the health of children in high-income settings.

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