Cholera risk in Surabaya

Cholera is a bacterial infection spread through contaminated water or food, causing severe diarrhea and dehydration. In Surabaya, the risk score of 66/100 reflects ongoing challenges with water infrastructure, seasonal flooding, and dense urban living. Standing floodwater after the rainy season increases exposure, and crowded areas with limited sanitation raise transmission risk.

Key local factors in Surabaya: intermittent water supply, street food stalls near drainage channels, and reliance on untreated well water in some neighborhoods. These conditions allow cholera bacteria to spread quickly during hot months when water storage practices increase.

Prevention steps for residents and visitors:

1. Drink only boiled or bottled water. If boiling, keep it rolling for at least one minute. Avoid ice from unknown sources.

2. Eat freshly cooked, hot food. Skip raw vegetables and unpeeled fruits unless you wash them with safe water and peel yourself.

3. Wash hands with soap and clean water before eating and after using the toilet. Use hand sanitizer if soap is unavailable.

4. Store water in clean, covered containers. Do not dip hands or cups inside; use a tap or ladle.

5. Seek care immediately if you have watery diarrhea or vomiting. Start oral rehydration with clean water, salt, and sugar (6 teaspoons sugar, half teaspoon salt per liter) while arranging medical help.

These steps lower your risk in Surabaya’s environment.