Polio is the polio vaccine. The polio vaccine required at the age of 3 months can be given at the same time as the DPT vaccine or separately, and there is no clear rule on how it must be given. Polio vaccine is a preventive vaccine, which has the effect of preventing polio, and is required for infants at the age of three. The DPT vaccine is a class I vaccine required by the state, and infants at the age of three need to receive the first dose. Polio vaccine and DPT can be given at the same time, and the two vaccines do not interfere with each other. However, there is no regulation indicating that the two vaccines must be given at the same time. It is recommended that the two vaccinations be given more than 28 days apart if they are given before or after each other. Whether you receive the polio vaccine or the DPT vaccine, it is important to take good care of yourself after the vaccination, and if you have any adverse reactions, you should consult a doctor promptly.