This morning my grand daughter acting perfectly fine. Playing with cousins and eating and drinking. She was helping pick green beans in the garden around noon. She wasn t coughing or having a runny nose or anything like that. My 31/2year old grand daughter got some kind of bite on her ankle around noon today. She was fine until around 3. She got tired and started to run a fever of 100.4. She wouldn t eat supper or drink any thing. At 6 pm she throw up and still woul dn t drink. What could of caused this to act that fast.