Selected to be a member of the Japanese swimming team at the 1932 Los Angeles Olympics, Ōyokota won the bronze medal in the Men's 400 m Freestyle event, despite suffering from severe Gastroenteritis at the time.
FIMRC operates a clinic in Las Delicias (near San Salvador) that seeks to treat gastroenteritis, influenza, malaria, measles, pneumonia, and bronchitis, each of which is caused or complicated by the malnutrition, poor sanitation, and poor housing conditions that the children of Las Delicias experience.
Two of the mostly seen symptoms are Gastroenteritis and cholestatic liver disease.