I visited a local nursing home Friday morning with 4 children. By the afternoon 3 of the 4 children had severe diarrhoea and I was feeling nauseous and off food. By Friday evening I had severe diarrhoea, stomach cramps and a headache. Could this be a bug picked up from the nursing home, or is that too quick? We were there for a hour and the children had a snack and drink but I didn't.