I'm very worried about my 5 yr. old who had the "stomach flu" over a month ago, as the whole family did. Since then she as had continuous puralent diarrhea and vomitting 2-3 times a week, usually 1-2 AM in her sleep. She became dehydrated and had IV's. Her pediatrician thinks it will get better. Finally they took stool, blood and urine samples. Her blood was normal, urine showed dehydration and ketosis, no salmonella in stool, but waiting for parasite results.