My mother who is in a care home had gastroenteritis last weekend and is still in bed, with zero appetite (she usually eats well) and has lost a lot of weight. She is drinking water but couldn't even eat half of a plain biscuit today. Is this normal in the elderly, surely she can't continue like this for eight days and counting!? Will she end up in hospital needing glucose etc - she is 89 years old and they just describe it as 'poor appetite' following a virus. I've had noro myself and I know that it does kill the appetite but a week is excessive surely?