A bug is going around here where I live, my son had it then I got it, and lots of others have had it. It causes diarrhea initially then vomiting, 15 to 20 mins apart, for hours...really almost violent vomiting, lasts about 24 hrs. What I noticed with my son and then myself (then questioning others that have had this) is that the vomit is pink from start to finish, even with dry heaves. I am an MPH and epi of infectious disease is what I am fascinated with (not, unfortunately what I am doing in public health right now) so I am curious what virus causes the pink colored vomit?