Can Humans Get Worms from Cats? What You Need to Know
You’ve just found out your cat has worms, and now you’re wondering: can humans get worms from cats? It’s a reasonable question, and the honest answer is yes — some intestinal parasites cats carry can infect humans under the right circumstances. Can you get worms from cats depends on the type of worm, how exposure happens, and your personal risk factors. This guide covers the main parasites, how transmission occurs, and what to do.
Whether you’re asking can I get worms from my cat after finding evidence of roundworms in the litter box, or wondering can you get worms from a cat via casual contact, or more specifically can a human get worms from a cat through grooming or touching — the risk level varies by parasite and exposure route.
Which Worms Can Spread from Cats to Humans
Roundworms (Toxocara cati) are the most common parasite that can transfer from cats to humans. Children playing in soil contaminated with cat feces are at highest risk. Roundworm larvae can migrate through human tissue — a condition called visceral larva migrans — causing symptoms ranging from mild to serious depending on where larvae travel. This is one reason veterinarians emphasize regular deworming for cats.
Hookworms (Ancylostoma species) penetrate skin on contact with contaminated soil. Walking barefoot where infected cat feces have been deposited can lead to cutaneous larva migrans — a skin condition where larvae migrate under the skin surface. Can a human get worms from a cat this way? Yes, through environmental contamination rather than direct contact with the cat.
Tapeworms from cats rarely infect humans directly. Dipylidium caninum, the most common cat tapeworm, requires accidentally ingesting an infected flea — unusual in adults but theoretically possible in very young children. Echinococcus tapeworms, found primarily in working cats exposed to infected rodents, are a more serious concern in some regions.
How Transmission Actually Happens
Direct petting does not transmit worms. Can you get worms from a cat by touching them? No — worm eggs are shed in feces, not on fur. The risk comes from: handling infected feces without washing hands, children playing in soil that outdoor cats use as a toilet, bare skin contact with contaminated soil or sand, and accidentally ingesting flea-infected material.
Thorough handwashing after handling cat litter, keeping sandboxes covered when not in use, and ensuring children wash hands after playing outside eliminates most transmission risk.
Symptoms of Worm Infection in Humans
Roundworm larvae in the body can cause fever, coughing, abdominal pain, and in rare cases eye damage (ocular larva migrans). Hookworm skin migration causes intense itching and visible tracks under the skin. Most healthy adults clear light infections with treatment; children, elderly people, and immunocompromised individuals face higher risk of serious illness.
Protecting Your Household
Keep your cat on a regular deworming schedule as recommended by your vet — typically once every 3 months for outdoor cats. Test fecal samples annually. Scoop litter boxes daily and disinfect periodically. Wash hands after every litter box interaction. These steps make can humans get worms from cats a theoretical concern rather than a practical one in a well-managed household.
Next Steps
If you suspect your cat has worms, get a fecal flotation test from your vet and treat as directed. If you or a family member has unexplained abdominal symptoms, skin rashes with unusual tracks, or eye issues after known cat exposure, mention the cat’s parasite history to your doctor. Prompt treatment is straightforward for most zoonotic worm infections.
