∙Diseases caused by parasitic worms like the nematodes are called helminthic/parasitic worm diseases.
∙ Nematodes can cause a variety of diseases such as filariasis, ascariasis, and trichinosis.
∙Ascariasis is an infection of humans and other mammals caused by intestinal roundworms of the genus Ascaris.
∙ Drinking water and food contaminated by the faecal matter of an infected person are the main sources of infection.
∙ Filariasis is caused by the filarial worms that are transmitted by the bite of the Culex mosquito.