Infant mortality in Venezuela was 19 deaths per 1,000 births for 2014 which was lower than the South American average (To compare: The U.S. figure was 6 deaths per 1,000 births in 2013 and the Canadian figure was 4.5 deaths per 1,000 live births). Child malnutrition (defined as stunting or wasting in children under the age of five) was 17%. Delta Amacuro and Amazonas had the nation's highest rates. According to the United Nations, 32% of Venezuelans lacked adequate sanitation, primarily those living in rural areas. Diseases ranging from diphtheria, plague, malaria, typhoid fever, yellow fever, cholera, hepatitis A, hepatitis B, and hepatitis D were present in the country. Obesity was prevalent in approximately 30% of the adult population in Venezuela.