What are the symptoms of a kitten after its first vaccination?

Generally speaking, kittens will not show any abnormal symptoms after the first vaccination, but some kittens may show symptoms such as lethargy, fever, loss of appetite and poor spirit within a day or two after vaccination, which is normal. If it does not improve for more than 48 hours, it may not be caused by the vaccination and prompt medical attention should be sought. In addition, some cats may have an acute allergic reaction after vaccination, with clinical manifestations such as profuse tearing, eye redness, shortness of breath, facial redness and swelling. In this case, it is recommended to take it to the vet for examination and treatment promptly.