Visceral toxocariasis is spread when children ingest soil contaminated with dog or cat feces containing the eggs of cat or dog roundworms, and cutaneous larva migrans, transmitted when children walk barefoot on soil contaminated with cat or dog hookworm larvae that penetrate their skin. (parasites911.com)
Similarly, I've found no support for the HAHF claim about 600 — 700 children going blind as a result of toxocariasis. (voxfelina.com)
The infestation is called toxocariasis in humans, and it takes two main forms: ocular larval migrans, in which the worms settle in a person's eyes, and visceral larval migrans, in which the worms settle in other organs in a person's body. (vetinfo.com)