The Chicken Pox Vaccine: To Vaccinate or Not to Vaccinate

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How Long Does Immunity Last?

In Japan, studies have shown the immunity to varicella generated by the vaccine to last at least 20 years. If the response to this vaccine is similar to the body's response to other well-known vaccines, such as Measles, Mumps, Rubella, and Polio, protection should probably last a lifetime.

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