revaccinate       
verb [ T ] (also re-vaccinate) uk/ˌriːˈvæk.sɪ.neɪt/ us/ˌriˈvæk.sə.neɪt/
 再接种疫苗
to give someone a vaccine (= a substance that protects against a disease) again for the same disease
  The best way to protect patients is to get them revaccinated.
 No one who had been recently vaccinated or re-vaccinated contracted the disease. 最近接种过或再接种过疫苗的人都没有染上这种疾病。 
  - More examples
 - There will be a need to revaccinate some high-risk children who have already received the jab.
 - People who were vaccinated with a vaccine of unknown type should be revaccinated with 2 doses of live vaccine.
 - Vaccinated animals that are suspected of being exposed to rabies should be re-vaccinated immediately and then strictly quarantined, generally for a period of 45 days.