Worldwide, six conditions (see graph) cause 73% of childhood deaths each year, according to a report from the World Health Organization (WHO).

Of the nearly 11 million children who die annually, 42% were African and 29% lived in southeast Asia. Researchers identified poor nutrition as an underlying cause in 53% of childhood deaths. Preventable and treatable diseases-pneumonia, malaria, diarrhea, and measles-account for 48% of deaths. Researchers used data from publications and continuing studies to compile their figures.

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