Cysticercosis - Taenia solium Life Cycle

1) Eggs or gravid proglottids in feces and passed into environment.

2) Embryonated eggs and/or gravid proglottids ingested by normal intermediate host (swine). 

3) Oncospheres hatch, penetrate intestinal  wall, and circulate to musculature.

4) Oncospheres develop into cysticerci.

5) Humans acquire intestinal tapeworm infection via consumption of cysticerci in meat.

6) Adults in small intestine

7) Embryonated eggs ingested by human host.

8) Oncospheres hatch, penetrate intestinal wall, and circulate to musculature.

9) Cysticerci may develop in any organ, most commonly in subcutaneous tissues, brain, and eyes.



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