For 6-year-old DPT vaccine, the distance between two shots can be delayed to 6 weeks at the latest, and it is generally recommended that it be completed in 4~6 weeks. Children aged 6 years old need to take the DPT vaccine, it will generally be recommended that the interval distance between two injections is 4~6 weeks, the latest should not be more than 6 weeks, if overtime, it may affect the effect of the DPT vaccination, the body may not be able to produce antibodies, and fail to achieve the immune effect. A total of 4 injections of DPT vaccine are required, and you can choose to complete 3 injections from 3 months to 12 months of age, and you can choose to take a booster injection, that is, the 4th injection, at 18~24 months of age. However, due to personal circumstances or special health reasons, it may be necessary to delay the vaccination. You need to know before you get the DPT vaccine that it is generally not recommended if you have an encephalopathy or if you have epilepsy. If severe shock or high fever occurs after the first vaccination, it is recommended to stop subsequent vaccines promptly. If precautions are not taken when administering DPT vaccine, it may cause neuritis, encephalitis, or even induce myelitis. If you need to take the DPT vaccine, it is recommended that you consult your doctor first and analyze whether you can take the vaccine in the light of your personal situation.