PTCB Immunization Practice Questions - PTCB Immunization Administration Certificate Exam

A patient asks what 'herd immunity' means. What is the best technician response?

Indirect protection of unvaccinated individuals when a high percentage of the population is immune Lifelong protection conferred by a single vaccine dose Immunity that only develops after natural infection The ability of a vaccine to prevent all disease symptoms

Correct Answer:

Indirect protection of unvaccinated individuals when a high percentage of the population is immune

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