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My cat was bitten by mosquitoes. Should I worry about heartworms?

Updated on September 23rd, 2025

My cat was outside for a bit and I noticed there were a few mosquitoes biting her and I think she got bite as well. Should I be concerned? I read mosquitoes can spread heartworm disease and I'm really afraid something might happen to her. What are the chances of her developming heartworms and what are some symptoms I should leave look out for? Thank you.

1 Answer

Most Helpful Answer

Dr. Melanie, BVSc MS

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on August 8th, 2018

Yes, that is correct that mosquitoes can lead to heartworms in cats. Symptoms include coughing, lack of appetite, vomiting, weight loss, and asthma-like attacks. Heartworm disease in cats is different than heartworm disease in dogs, and I will put a link below to website that talks about it in more detail. The cat is not a typical host of heartworms, and the worms usually do not survival to the adult stage. Prevention is the only way to keep cats from getting heartworms. There is a chance she could get heartworms, but she is less likely to have adult worms. Read the webpage below to get more information. I hope this helps!

https://www.heartwormsociety.org/heartworms-in-cats
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