| The threadworm, Enterobius vermicularis, is the commonest worm parasite of children in non-tropical areas such as northern Europe. |
| One of their main parasites is a gut nematode, the caecal threadworm T. tenuis, which has a direct lifestyle with no alternative hosts within the same habitat. |
| Common intestinal parasites include pinworm, whipworm, roundworm, hookworm, threadworm, and tapeworm. |
