<unk> l illness in children accounts for 1.5 to 2.5 million deaths per year worldwide. It is responsible for the secondary cause of mortality among children less than 5 years of age surpassing the combined childhood deaths from malaria, measles, and AIDS. In 2009, the World Health Organization (WHO)/United Nations International Children's Emergency Fund (UNICEF) reported 2.5 billion cases of<unk>  in children less than 5 years old. More than half of the cases occurred in Africa and South Asia. It is estimated that Africa and South Asia comprise more than 80% of deaths from<unk>  in children. In fact, about 75% of the childhood deaths from<unk>  come from only 15 countries. According to the World Health Organization (WHO), the proportion of deaths attributable to<unk> l illness among children less than 5 years of age was 13.2% in 2002. Half of these childhood deaths were due to<unk><unk> l causes. Worldwide, studies estimate that<unk> l illness affects 3 to 20% of children under the age of 5 with an incidence of 2.7 episodes of<unk>  per child-year. Developing nations experience higher burden of disease and mortality from<unk><unk>  in children compared to developed nations. In the United States, it is reported that 15 to 20% of young children have an episode of acute<unk>  each year. Compared to worldwide estimates, the United States has a lower incidence rate of<unk><unk>  in young children reported at 0.18 episodes per child year. In pediatrics,<unk>  is a common complaint making up 9% of U.S. hospital visits for children less than 5 years old. In contrast to resource-poor nations, resource-rich nations such as the United States experience less<unk><unk>  severity. In the United States, approximately a quarter of<unk><unk>  cases in young children seek medical care and less than 1% of cases are hospitalized.
Chronic diarrhea of infancy
Milk allergy
Food protein-induced enterocolitis syndrome
Wilderness-acquired diarrhea
Brainerd diarrhea
Neutropenic enterocolitis
Congenital tufting enteropathy
Necrotizing enterocolitis