And there has been enormous progress in fighting river blindness, guinea worm, diarrheal diseases, and others.
The diarrheal infection of children is caused by the group A rotaviruses.
Group C rotavirus has been associated with rare cases of diarrheal outbreaks in Japan and England.
Diarrheal diseases are also a major world health problem, and may be a cause of malnutrition.
People with celiac disease, inflammatory bowel disease, and other prolonged diarrheal illnesses develop nutritional deficiencies that diminish growth and immunity.