When your kids are sick

I have to say I don't know what bug is going around, my oldest got sick about a week ago with strep, high fever, vomiting, she was on antibiotic, then my 2 yr. got sick this week with high fever, I had to go to the ER with her, she had several tests done and was told that it was "viral" the next day my 6 yr old. wakes up with a fever, sore throat and nausea, I took her to the doctor and it's strep throat again! so she was put on a much stronger antibiotic..my little one is doing much better, it's been crazy!