Is cholera fatal?

If not treated: It's often fatal unless treated with aggressive rehydration. The cause of death is massive and rapid dehydration.

It can be: It is estimated to affect 3 to 5 million people & to cause > 100,000 deaths per year world-wide. 5 to 10% have severe illness with symptoms/ signs of abdominal pain, watery diarrhea, nausea, vomiting, leg cramps,lethargy, dehydration & electrolyte imbalances. For severe cases- rehydration needs to be rapidly started to prevent death from dehydration. REF: https://www.cdc.gov/cholera/general/index