California Registered Dental Assistant (RDA) Written Practice Exam

Question: 1 / 400

How often is immunization against influenza administered?

Once a year

The correct answer is A. Flu immunization is an annual vaccine that helps protect against the influenza virus. This is because the virus changes every year and the vaccine needs to be updated to provide the most effective protection. Option B, C, and D are incorrect because they suggest longer or shorter intervals between getting the vaccine, which would not offer optimal protection against the constantly evolving flu virus. Getting the flu vaccine once in a lifetime, as suggested in option C, would only provide temporary protection and not prevent someone from getting the flu in the future. Option D, getting the vaccine every six months, is unnecessary and could potentially lead to side effects or adverse reactions. Therefore, option A, once a year, is the most accurate answer.

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Every two years

Once in a lifetime

Every six months

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