What happens if a puppy is vaccinated too early?

A puppy’s vaccination schedule is determined by vaccine type and the dog’s age. Within a certain range, vaccinating too early or too late can negatively affect the dog’s health. If a puppy is vaccinated too early, the immune response may be insufficient and fail to produce enough antibodies.

In addition, if the puppy is too young or unwell at the time of vaccination, it may be harmed, and abnormal reactions such as fever, vomiting, lethargy, and loss of appetite may even appear.