'Visceral larva migrans' is produced by:
a. Most common cause of visceral larva migrans is Toxocara canis. It is also called the dog round worm.
b. They are seen in the intestine of dogs and other canids.
c. In adult dogs the infection is often asymptomatic. Humans are paratenic hosts and get infected by ingestion of embryonated T. canis eggs.
d. After ingestion, the eggs hatch and larvae penetrate the intestinal wall and are carried by the circulation to a wide variety of tissues (liver, heart, lungs, brain, muscle, eyes).
e. While the larvae do not undergo any further development in these sites, they can cause severe local reactions that are the basis of toxocariasis.
f. The disease caused by migrating larvae results in visceral larva migrans and ocular larva migrans.