Sickness in stomach and vomiting. Such symptoms as sickness, dizziness, and vomiting come at the same moment as the virus of cholera occurs in blood. It can last for some period even if, in your personal opinion, you are absolutely fit. First, nausea appears. It means that your body tries to inform you that the problem exists. The patient is getting dizzy, weak, and wants to stay not far from a water closet. If the virus of cholera exists, the vomiting is coming next with the copious allocation.