hyperimmune

/ˌhaɪpərɪˈmjun/
adjective
  1. Having a very high level of immunity, often due to repeated exposure or vaccination, or describing a substance (like blood plasma) rich in antibodies.
    • The patient received hyperimmune plasma to fight the virus.
    • After the booster shot, her body became hyperimmune to the disease.
    • Hyperimmune animals are used to produce antivenom for snake bites.