The species<unk>  is an important parasite, occurring in rats, pigs, and humans, and is responsible for the disease trichinosis.  It is sometimes referred to as the "pork worm" due to it being found commonly in pork products that are undercooked.
Trichinella spiralis
Trichuris trichiura
Schistosoma mansoni
Onchocerca volvulus
Ascaris lumbricoides
Oesophagostomum
Wuchereria bancrofti
Fasciola hepatica