Does anyone know if there is a way you can tell if a person is v* from something contagious or if it is something like food poisoning or gallstones?


I was just wondering if there was a way to tell the difference. My mom has been sick for two days now. She is no longer v*, but she can only keep down water. Would this be something I could catch from her, or is there no way to tell? She does not have a fever.