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Home >Information for Patients > Dictionary Index

Dictionary of Cancer Terms

View in Spanish: Inmunidad

Immunity (ih-MYOO-nih-tee)
The condition of being protected against an infectious disease. Immunity can be caused by a vaccine, previous infection with the same agent, or by transfer of immune substances from another person or animal.

Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.