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?
Hello dear, Thank you for your contact to Chat Doctor. I read and understand your concern. I am Chat Doctor answering your concern. There are no viruses present which can cause a pink vomits. But it is possible to have slight hemorrhage in the vomits which is giving it a pink tinge. I advise you to do your through physical examination done. Once it is done your probable cause can be ascertained. Please take the precautions as to avoid the vomiting. Like avoid bad smells, you can swallow the piper mint etc. I will be happy to answer your further concern on bit.ly/ Chat Doctor. Thank you, ChatDoctorInfectious diseases specialist, ChatDoctor.