Two cases of dipylidiasis (dog tapeworm infection) in children: update on an old problem.

Children in households with dogs and cats may become infected with the dog tapeworm more frequently than suspected. Because of age-appropriate hand-to-mouth exploration, young infants and toddlers, through contact with fleas on pets, floors, and furnishings, are particularly susceptible. Knowledge of the life cycle of this animal parasite and the manner in which children acquire and demonstrate infection can lead to early diagnosis and effective treatment.