Dogs can become infected with Toxocara canis by ingesting feces or soil which is contaminated with larvae. If the dog eats an infected animal (rat, mice, birds) he may contract the roundworm. Cockroaches and earthworms may also carry roundworm larvae, which can be transmitted to the dog if they are ingested.
How does a dog get Toxocara canis?
Dogs are infected with Toxocara by: Ingesting eggs. Ingesting an intermediate host. Becoming infected while in the uterus.
How do animals get Toxocara?
An estimated 10,000 human cases of Toxocara occur in the U.S. every year. Dogs and cats infected with roundworms contaminate their environment by passing the worm eggs in their feces. The eggs can survive for long periods of time in yards, parks and playgrounds.
How common is Toxocara canis?
Research also suggests that 25% of all cats are infected with Toxocara cati. Infection rates are higher for dogs and cats that are left outside and allowed to eat other animals. In humans, it has been found that 5% of the U.S. population has been infected with Toxocara.
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