A minute worm which infests the intestinal canal of certain animals, including man and the hog. This is in the adult procreative state. The young, larval trichinae bury themselves in the muscles, where they exist as spirally-oiled worms in minute cists. Their danger to man is in their immense numbers. In a cat, a single ounce of flesh was estimated to contain 325,000 trichinae. They enter man principally through partly cooked pork. Thorough cooking destroys them and obviates the danger of infection.