<s>[INST] My mom and my four-year-old niece got what seems to be like a stomach bug that only lasted a couple of hours for tops my mom experienced vomiting only a few times and it was very sudden my niece however experience vomiting and diarrhea all very sudden all gone today they're both fine could this be the Norovirus I don't live with them and I disinfect everything wash my hands frequently and use hand sanitizer no one in my house is infected however I did see them a few days before they got sick is there a good chance that I could get sick as well? [/INST] Hi, Thanks for using Healthcare Magic  Acute vomiting and diarrhea is normally caused by a viral or bacterial infection but the exact cause (exact bacteria or virus) would not be known without testing. Most types of viruses and bacteria that cause this infection can be transmitted hand to mouth, meaning contact with the hands, the eating food or drink that have been contaminated with the infected hands. Hand washing and disinfecting surfaces would definitely help. I hope this helps </s>