Self-controlled cohort study reveals elevated herpes zoster risk after booster vaccination in adults, suggesting vaccine type influences outcomes.
Our study showed a slight increased risk of herpes zoster when taking into account all doses and all types of vaccines. After stratification on vaccine type, no increased risk of herpes zoster after the primary vaccination series and a slightly elevated risk after the third/booster vaccination with a messenger RNA vaccine were found.
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Jajou et al. (2025) studied this question.
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