Petco Text Logo
Petco Pet Logo

How do I know if my dog's vaccine injection site is infected?

Updated On September 23rd, 2025

Pet's info: Dog | Yorkshire Terrier | Male | unneutered | 4 months old | 4.2 lbs

How can I tell if Coco has a Infection where he got his Vaccine

1 Answer

Most Helpful Answer

Image profile

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on August 20th, 2018

At the site where the vaccine was given, you may see swelling, it may be red, the area would be quite warm to the touch, and there may be pus. In order to confirm if he has an infection there, Coco will need to see the vet.

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored