Cat Fever After Vaccination: What to Do?

Part 1: Why Does a Cat Get a Fever After Vaccination?

Vaccines typically contain weakened viruses, which can possess a certain level of toxicity. When injected into a cat's body, these antigens stimulate the immune system, leading to various reactions. These reactions often include a lack of energy, drowsiness, vomiting, diarrhea, and, of course, fever.

Part 2: What to Do If Your Cat Develops a Fever After Vaccination

It's not uncommon for cats to develop a fever after receiving vaccinations. Generally, a fever within the first 24 hours after vaccination is considered normal and should subside quickly. Pet owners should not be overly concerned and should simply keep a close eye on their furry friend. However, if the cat's temperature exceeds 39 degrees Celsius and remains high for more than a day, it's advisable to administer a shot of an H1 receptor antagonist to prevent the fever from becoming allergic and persistent.

In cases where the fever persists after the administration of the receptor antagonist and is accompanied by other symptoms, it's best to take the cat to a veterinary hospital for a thorough examination. Once diagnosed, appropriate treatment can be administered, such as physical降温 (cooling). It's generally not recommended to use feverreducing medication immediately after vaccination, as it may cause adverse effects. Some cats may develop a fever after vaccination due to low immunity or because they were already infected with a virus, which was in a latent stage. The vaccination could trigger the early onset of some viral diseases. Therefore, it's essential to have your cat tested for viral diseases at the vet's office before vaccination to avoid unnecessary procedures.