用definitive host造句子，“definitive host”造句

This disease is spread by the dissemination of viable tapeworm ova from the feces of infected dogs and other definitive hosts.

Cysts should be excised and sterilized to avoid ingestion by the definitive host.

Echinococcosis is spread by the dissemination of viable tapeworm ova from the feces of infected dogs and other definitive hosts.