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Do dogs need year-round heartworm prevention, or just in summer?

Updated On September 23rd, 2025

Pet's info: Dog | Maltese | Female | unspayed | 3 years and 8 months old | 4 lbs

Also Doctor Melanie- the heartworm happens only in summer right? Here in Sarajevo the weather is sunny but icy cold ! Please pray that we're out of risk because I cannot lose her.. Thank you again! Also about recovering from the surgery. Is it alright if I go on a little trip with her in spring? What should I do next?

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on February 4th, 2017

Heartworm prevention should be given year round to be safe in countries with a heartworm problem like the US, but given that it's icy cold there, it's highly unlikely Bella will get it, especially if there's never been a case of it in your country :-) Yes, it's fine for you to take her on a trip in the spring. Recovering from a spay surgery takes 10-14 days, and while she should remain quiet and resting for that entire time, it will be safe to take her on a trip after that time has passed!

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