A girl aged six was admitted to hospital after drinking dangerous levels of alcohol.
It is not known how the child, who was treated at Eastbourne District General Hospital some time last year, came to be so intoxicated.
She was one of 198 under-17s who received treatment at hospitals in East Sussex for drink or drug abuse over a five-year period.
The figures were released after a Freedom of Information request, less than a month after officials from neighbouring Brighton and Hove City Council found a nine-year-old boy was already an alcoholic.
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