How Are Trematodes and Cestodes Transmitted?

spirurid 'filarial worms'occur as long thread-like adults in blood vessels or connective tissues of their hosts. The large female worms release live larvae (microfilariae) into the blood or tissues which are taken up by blood-sucking mosquitoes or pool-feeding flies and transmitted to new hosts.

How are Cestodes transmitted?

Taenia solium cysticercosis or H nana can be transmitted in a direct cycle via ingestion of eggs from human feces. Echinococcus eggs from dog or fox fur cause human hydatid disease (humans are the intermediate host; canids are the definitive hosts).

How are helminth parasites transmitted to humans?

Transmission. Soil-transmitted helminths are transmitted by eggs that are passed in the faeces of infected people. Adult worms live in the intestine where they produce thousands of eggs each day.