Gastro-enteritis cases are said to be up by 25% from the last year .

BBC: By Jyotsna Singh in Delhi

She had previously been forced to cancel two royal engagements in December and January because of bouts of gastro-enteritis.

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Breastfed babies are five times less likely to be admitted to hospital with gastro-enteritis and 20% less likely to become obese as adults.

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