disease (N) - illness caused by infenction or failure of health, herd (N) - a large group of animals of some type that live together, antivax (N) - a person who is against vaccines, overhear (V) - to hear what other people are saying without their knowledge, herd immunity (N) - protection against the rapid spread of a disease that is achieved when a large number of individuals within a population are immune to it,

vaccines vocabulary quiz

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