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Definitions

immunization

[im-yuh-nuh-zey-shuhn, ih-myoo-] / ˌɪm yə nəˈzeɪ ʃən, ɪˌmyu- /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

While the vaccine was first developed in 1963, it wasn’t until 1980 that all 50 states had laws requiring measles immunization for school enrollment.

From Salon • Apr. 8, 2026

Despite the consistent safety record of vaccines, I discuss immunization with each and every family that comes into my clinic.

From MarketWatch • Mar. 5, 2026

But doctors believe in immunization because it works, not because they’re paid shills.

From The Wall Street Journal • Feb. 27, 2026

It was used during the Covid-19 pandemic to swiftly develop an immunization that global health authorities deemed safe and effective against the fast-spreading illness.

From Barron's • Feb. 18, 2026

This is the genuinely decisive technology of modern medicine, exemplified best by modern methods for immunization against diphtheria, pertussis, and the childhood virus diseases, and the contemporary use of antibiotics and chemotherapy for bacterial infections.

From "The Lives of a Cell" by Lewis Thomas