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Dog coughing, low energy, on Frontline. Worried about mosquitoes?

Updated on September 23rd, 2025

Pet's info: Dog | Maltese | Female | unspayed | 6 years and 2 months old | 4 lbs

We've been in Croatia for 3 days, there's been lots of mosquitoes since we were presiding near the water, I've been monitoring her and noticed mild cough and decreased energy level, she's on Frontline protection and I was thinking about getting her checked but parents think that those infected mosquitoes are in Africa only. What do I do?

1 Answer

Most Helpful Answer

Linda G,  MS, DVM

Answered By Linda G, MS, DVM

Veterinarian

Published on July 30th, 2019

Hello. If you are concerned about heartworm disease, it would take approximately 6 months from the time an infected mosquito were to bite Bella for you to see clinical signs of decreased energy & cough. So, if Bella continues to act well, do have her checked, especially since Frontline does nothing to repel mosquitoes, only fleas & ticks. Thanks for using Petco Pet Education Center, formerly Petcoach.
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