In spite of the availability of effective vaccines, measles continues to be a public health problem throughout the world. In 1990, the Centers for Disease Control and Prevention (CDC) received more than 27,672 reports of measles in the U.S. Complications were reported in one-third of infected children under 5 years of age. Of the 89 measles-related deaths in 1990, 55% occurred in children less than 5 years old.

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