Abstract
A visual aid tool was used in two communities of Chad to raise parents' awareness of the benefits of immunization. In one community, the tool was administered by social workers two weeks before national immunization days (NIDs) and in the other community by vaccinators during NIDs. Parents' awareness significantly rose in both communities but was more significant in the community where the tool was administered by social workers. A significant association was found between parents' unawareness and children who missed immunization in both communities.
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