Flux. Flux is a rather usual symptom for different infections and stomach problems. It can be caused even by the low food quality. However, in case of cholera, this symptom is much more dangerous because of the huge amount of a body water loss. The flux is washy and pale at a glance; it comes unexpectedly. Cholera flux can cause about 1L of water loss per hour. This pace of losing liquids is extremely fast that is why it is dangerous. The medical help must come immediately.