Autoinfection is a mode of transmission in -
Trichinella
Cyticercosis
Ancylostoma
Ascaris
cysticercosis man sometimes gets infection in the same way as the pig I.e either by drinking contaminated water or by eating uncooked vegetables infected with eggs. Apa from this a man harbouring the adult worm may also auto infect himself either due to unhygienic personal habbits or by a reversal of peristaltic movement of the intestines by which gravid segments are thrown back to the stomach,equivalent to the ingestion of thousands of eggs (refer pgno:100 baveja 3 rd edition)
parasitology