C.S.
I have three young children and have been going through the same thing with them since Christmas! With kids, especially in school, they just seem to pass it back and forth. This is normal and unfortunatley there is not much you can do about these viruses. Just making sure that they are getting fluids and staying hydrated. I get worried sometimes as well, especially since my youngest is only 1 year. He seems to have gotten hit the worst (Bronchitis, Flu, Colds, etc.) :(