What is the zoonotic potential of Toxocara canis?

Toxocara canis, also known as the dog roundworm, is a parasitic nematode that primarily infects dogs but has significant zoonotic potential. When humans accidentally ingest Toxocara canis eggs, which can be found in contaminated soil or surfaces where infected dogs have defecated, the larvae can migrate through the human body. This can lead to conditions known as ocular or visceral larva migrans.

In ocular larva migrans, the larvae can travel to the eye and cause serious damage, potentially leading to vision impairment or loss. In visceral larva migrans, the larvae may migrate through various organs, causing inflammation and various symptoms that can affect the liver, lungs, and central nervous system. This highlights the importance of proper hygiene and control measures to prevent infection from this parasite, especially in areas where children may play.

Other options linked to Toxocara canis are not accurate. For instance, it does not induce rabies in humans, as rabies is a virus transmitted primarily through bites from infected animals. Additionally, canine parvovirus is a viral infection specific to dogs and does not affect humans. Finally, stating that Toxocara canis has no zoonotic potential ignores the significant health