If the reissued vaccination certificate is only dated without signature and seal, it will have a certain impact on children's schooling. This is because schools and local community health service centers or township health centers will pay attention to vaccination records when checking vaccination certificates, and the absence of signatures and seals may arouse their suspicion.

In order to solve this problem, it is suggested that you contact the local community health service center or township health center, explain the situation to them and ask them to sign and seal. If they can't provide this information, you may need to contact the relevant departments for further processing.

The above suggestions are for reference only, please adjust the specific operation according to the actual situation.