The diphtheria vaccination is given once at the age of 3 months, once at the age of 4 months, once at the age of 5 months, and once at the age of 1.5 years and 7 years. Pertussis vaccine, also known as diphtheria triple vaccine, is an inactivated vaccine consisting of pertussis vaccine, diphtheria toxoid and tetanus toxoid in a certain ratio. The vaccination of children can effectively prevent pertussis, tetanus, diphtheria and other three diseases. Pertussis vaccine belongs to the national class I immunization vaccine, which is provided free of charge by the state and requires universal vaccination. Generally, children are given the first injection when they reach 3 months after birth, the second injection when they reach 4 months, the third injection when they reach 5 months, and then a booster injection when they are 1.5 to 2 years old. When the child reaches 7 weeks of age, he or she will receive a booster dose of the refined diphtheria vaccine. The total number of injections is 5, with 3 basic immunizations and 2 booster injections. In addition, children who develop abnormalities such as high fever and convulsions after the first injection should not be reinjected.