2 Worms Cats Can Pass to Humans & How They Affect You

Humans can get worms from cats, so it's important to know how you can protect both your pet and your family from these creepy crawlies.

Updated September 26, 2023
Woman holding a gray cat with golden eyes on a soft carpet

If your pet has recently been treated for parasites, it's natural to wonder whether you can catch these creepy crawlies from your kitty. The answer is yes: humans can get worms from cats, but only certain types. Transmission isn't just as simple as kissing your cat on the face, because there are plenty of other ways you can get cat worms. Discover how exactly people get worms from pets and what to look for so you can protect your family. 

Need to Know

There are two types of worms that you need to be concerned about when it comes to human contact: roundworms and hookworms. 

1. Roundworms 

Roundworms are long, spaghetti-like worms, and they feed on nutrients within an animal's intestines. 

Roundworm Larva and Egg

How People Get Roundworms From Cats

Cats who are infected with this parasite will shed the roundworm eggs in their feces. If you scoop the litter box and then don't wash your hands and prepare food or touch your mouth, there's a chance you could accidentally ingest the egg and become infected yourself. Digging around in contaminated soil or sandboxes can also lead to infection if you don't wash your hands. 

Symptoms in Humans 

People aren't the ideal hosts for these cat parasites, so instead of growing into adult worms within our intestines, the roundworm larvae move around. They'll migrate to other organs, like the liver, lungs, eyes, and more. Some symptoms of these migrants include: 

  • Vision problems
  • Cough
  • Painful belly
  • Enlarged liver
  • Headache
  • Fever
  • No appetite
  • Weight loss
  • Fatigue
  • Rash

Treatment for Roundworms 

Treatment for roundworms in humans can include medications, such as Mebendazole (Vermox) or Albendazole (Albenza), which are prescription oral tablets. You can prevent infestations by deworming your cat regularly and washing your hands often, especially after handling your cat's food, water, or waste. 

2. Hookworms

Hookworms are worms that are usually not visible to humans. This is because they're very small and attach themselves to the inside of a pet's intestines to feed on their blood. 

Parasitic hookworm

How People Get Hookworms From Cats

Like with roundworms, you can get hookworms if you accidentally ingest a worm egg after handling your cat or their feces. But hookworm larvae can also enter a person's body through the skin. For example, you could get hookworms by walking barefoot in an area where an infected cat pooped, like a sandbox or the beach. 

Symptoms in Humans

Hookworm infections are dangerous for both animals and people. Anemia and nutritional deficiencies are common results of hookworm infections in humans, and it can even prevent proper mental development in children who get hookworms from cats frequently. Some people don't show any symptoms of infection, but some common signs include:

Treatment for Hookworms

Albendazole (Albenza) or Mebendazole (Emverm) may be prescribed to be taken orally for one to three days to kill the parasites within your body. You can take action to avoid future infections by deworming your cat, properly disinfecting areas where your cat may have defecated, and wearing gloves and shoes when touching any of those areas.

Fast Fact

Fleas from your cat can potentially infect you with tapeworms, although the risk is minimal. According to the CDC, there are only a few reported cases in children.

Ringworm in Pets and Humans

Because of its name, many people think that ringworm is a type of worm, but in actuality, it is a fungal infection. It's distinguished by a reddish rash that usually has the shape of a ring, and it's very contagious. Contact with a cat's ringworm often results in that person also developing ringworm. It can usually be treated with over-the-counter medication, and it should clear up within two to four weeks. 

Preventing Worms Is Your Best Strategy

The best way to keep yourself and your family safe from worms is to keep your cats free of them. Keep your cat indoors to reduce their risk of infection and have your cat regularly dewormed if they catch mice or other prey. That way, you won't have to worry about them passing these gross parasites onto your family. 

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2 Worms Cats Can Pass to Humans & How They Affect You