Both types of tapeworm are transmitted by an intermediate host. One intermediate host is the flea. It has the immature tapeworm, Dipylidium caninum in its intestines. They are ingested by the flea when eating tapeworm eggs. The cat bites or swallows the flea and becomes infested that way.
The other type of tapeworm Taenia taeniaformis is ingested when eating rodents, uncooked meat, raw freshwater fish, and sometimes discarded animal parts.
|Life cycle of Dipylidium caninim - diagram copyright Michael at PoC|
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