Cysticercosis is a disease that is caused by the larval form of the Tapeworm Taenia solium (pork tapeworms). When humans ingest T. solium eggs, the eggs hatch in the upper small intestine. The oncospheres that were released from the eggs bury their way though the intestinal walls and travel through the circulatory system. They embedded themselves all over: subcutaneous and intramuscular tissues, the eyes, the brain, and other sites in the human body. Tissues become infected with larval cysts of T. solium, in which the human serves as the intermediate hosts. The cysticercosis incubation period if from months to years. Eventually the cysticerci die and become calcified within two years of infection. Cysticercosis does not occur with the Taenia saginata in humans.