As a part of a trial of acyclovir treatment of chickenpox in otherwise healthy children, the assessment of disease features and evolution showed a significantly more severe clinical picture at onset in the 215 patients with intrafamiliar exposure to varicella, compared with the remaining 486 with community-acquired infection, although the disease course proved similar by the third day of antiviral therapy. Children with household exposure to varicella are likely to suffer from a more severe disease, and might especially benefit from acyclovir treatment.
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