DIARRHEA is a major health problem among southwestern Indian infants (1, 2). Many environmental factors have been implicated in the high prevalence of diarrheal disease on Indian reservations and at all socioeconomic levels where living conditions are poor. Among these factors, the availability of water for personal hygiene is of prime importance in the control of diarrheal disease (3-5). Adequate sewage disposal systems including indoor flush toilets are also important in diarrheal disease control (6). Although the infant in his first year of life neither uses a toilet nor washes himself, the sanitary problems of his mother are reflected in the infant's health status. Because children
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