The eight-link vaccine requires three injections, and each injection costs about 100-140 yuan. Dogs should receive three injections of vaccine when they are first immunized, one injection every 21 days. If it is an annual booster shot, only one shot is needed, one shot every 11 months. The price of vaccines will fluctuate depending on the place of production, brand, and economic level of the place where the vaccine is sold.

Precautions for vaccination:

1. Dogs can only be vaccinated when they are completely healthy. Vaccines are composed of attenuated viruses. After the dog is vaccinated, the attenuated virus will stimulate the dog to produce antibodies. If the dog is vaccinated in an unhealthy state, the attenuated virus in the vaccine can easily cause the dog to become sick.

2. Dogs need to be vaccinated every year. Vaccination for dogs does not mean just one shot or all the shots in the first year. The vaccine has a certain time limit and is likely to become ineffective after a certain period of time, so a booster shot is required every year.

3. Choose regular vaccines. Vaccines must be purchased from regular channels, with production batch numbers, etc. It is best to go to a pet hospital to get vaccinated. Do not buy them privately to avoid buying fake vaccines. Moreover, the vaccine must be stored in the fresh-keeping layer of the refrigerator. It cannot be kept at room temperature or frozen, which will cause the vaccine to become ineffective.