nonresponder

/ˌnɑnrɪˈspɑndər/
noun
  1. A person or thing that does not respond, especially a patient who does not show a positive reaction to a medical treatment.
    • The doctor classified him as a nonresponder to the standard allergy medication.
    • In the clinical trial, about 20% of participants were nonresponders to the new drug.
    • Researchers are studying why some people are nonresponders to the flu vaccine.
Antonyms
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