Trial of Ceramic Water Filters to Reduce Cryptosporidium Infection in Kenya

Inclusion Criteria: Children 4-10 months old living in selected villages in the Asembo Health and Demographic Surveillance System (HDSS) study area in Kenya whose primary caretakers consent on their behalf to be visited weekly for 6 months to carry out weekly illness surveillance, and have a follow up home visit one year after initial enrollment into the trial. The household in which the child resides must be a consenting participant in the HDSS. As the children included in the trial are infants, the child's primary caretaker will be invited to participate and be administered questionnaires. Random selection will be at the compound level. Only one household per compound will be eligible for selection. Exclusion Criteria: Children 4-10 months old whose households are not active consenting participants in the HDSS will not be eligible for inclusion. Only the subset of children 4-10 months old who are randomly selected in the sample will be eligible for participation. \-