Toxocara canis (dog roundworm) eggs in dog feces can cause toxocariasis. In the United States, about 10,000 cases of Toxocara infection are reported in humans each year, and almost 14% of the U.S. population is infected. In Great Britain, 24% of soil samples taken from public parks contained T. canis eggs. Untreated toxocariasis can cause <answer>retinal damage and decreased vision.</answer> Dog feces can also contain hookworms that cause cutaneous larva migrans in humans.
Toxocariasis can lead to what in humans?
retinal damage and decreased vision.