Herpes zoster in a normal child after varicella vaccination

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Abstract
A healthy 5 year old girl developed herpes zoster in the dermatome supplied by the ophthalmic branch of the fifth cranial nerve 40 months after varicella vaccination. She was admitted to our hospital because of high fever and painful vesicular lesions over the left side of her forehead. She was treated successfully with systemic and topical acyclovir without developing herpetic keratoconjunctivitis. Our acute and convalescent phase evaluations showed that non-specific cellular and humoral immunity was normal. This is the fourth case of herpes zoster developing in an immunocompetent child following vaccination. Unlike the previously reported cases, our patient required hospitalization mainly to prevent ocular involvement. The issue concerning whether the universal introduction of varicella vaccination of normal children will reduce the incidence of the subsequent occurrence of herpes zoster must await further studies involving longer follow-up periods.