About a week after weaning, puppies should start regular vaccinations. When the puppy is vaccinated for the first time, it will be given monthly for the next two months. But do you know why the dogs vaccine needs three shots? What is the reason?

As a general rule, inject After the vaccine, the body receives the stimulation of the antigenic substance, the vaccine, and the antibody takes a certain period of time to produce, which takes about 2-3 weeks. However, the antibodies produced for the first time not only last for a short period of time, but also in small quantities. A small amount of antibodies has no effect on infectious diseases and cannot play an anti-epidemic effect, so it is not enough to vaccinate only once.

For the second vaccination, a large amount of antibodies can be rapidly produced by the body, which is dozens of times of the initial response, and the stay in the body is also longer. If the third vaccination is repeated 3-4 weeks after the second vaccination, the number of antibodies produced by the body will increase dozens of times on the basis of the second vaccination. As a result, the dog has the ability to resist infectious diseases in the body, and it can be retained in the body for up to a year.

Why do you need to inject three vaccines? Is it just a trick of the pet doctor? Because biological immunology needs to repeatedly stimulate memory lymphocytes, and the first immunization can only produce a small amount of antibodies , and the duration is short, more antibodies and long-term maintenance effects can be produced under multiple stimulations at reasonable intervals.