immunization
noun/ˌɪmjənaɪˈzeɪʃn/
/ˌɪmjənəˈzeɪʃn/
(British English also immunisation)
[uncountable, countable]- the act of protecting a person or an animal from a disease, especially by giving them an injection of a vaccine
- an immunization programme to prevent epidemics
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immunization