Infection occurs when swallowing meat containing the larvae of these worms. The meat of cattle may contain the larvae of bovine tapeworm, In pork - pork tapeworm. In the fish - a broad ribbon. Swallowed larvae attach to the wall of the small intestine. Worms with the entire surface of their body absorb food, vitamins, minerals from the intestines, poison the body of patients with their secretions, feces. The larvae grow rapidly, after 2.5-3 months they turn into mature worms. Tape worms are hermaphrodites, that is, they have male and female genital organs.