If advanced medical care is not accessible for some reason, the best you can do at home is diligent rehydration and supportive care, using Oral Rehydration Salts, either from a commercial mix or the WHO formula, pedialyte, sports electrolyte drinks, etc. Anti-diarrhea medications are not helpful. Cholera is spread by the oral-fecal route, usually water-borne, but casual contact generally is safe. Proper isolation from, and sanitary disposal of, waste is essential. Standard Third-world type food and water precautions are also required in outbreak areas. There is no effective vaccine. The cot with a hole over a bucket is an old standby for cholera patient management. You may be sick as a dog, but mortality in otherwise healthy adults is < 1%. However, cholera can kill within hours, especially infants and other vulnerable populations. Antibiotics may shorten the course of the disease, but their use will likely be restricted to the sickest and most at risk, rather than being widely distributed to all patients.