You've got it the wrong way around. From the NHS"Being exposed...

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    You've got it the wrong way around. From the NHS

    "Being exposed to chickenpox as an adult (for example, through contact with infected children) boosts your immunity to shingles.

    If you vaccinate children against chickenpox, you lose this natural boosting, so immunity in adults will drop and more shingles cases will occur."


    https://www.nhs.uk/conditions/vaccinations/chickenpox-vaccine-questions-answers/
 
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