Cholera risk in Phuket

Cholera is a bacterial infection caused by Vibrio cholerae that spreads through contaminated water and food. It causes severe watery diarrhea and can lead to dangerous dehydration within hours. Phuket scores 68/100 for cholera risk, meaning travelers face a moderate-to-high threat, especially during the rainy season (May–October) when flooding can contaminate water supplies and street food becomes riskier to consume.

Local risk factors in Phuket include:

• Raw or undercooked seafood, especially shellfish from coastal waters
• Ice made from untreated water in smaller restaurants and beach stalls
• Tap water that may not be consistently treated in all areas
• Heavy monsoon rains contaminating drinking water and flooding streets with sewage
• Popular night markets where food sits uncovered and hygiene standards vary

Prevention steps:

1. Drink only bottled or boiled water. Avoid ice in drinks unless you're certain it was made from purified water. Check that bottle seals are intact before purchasing.

2. Eat thoroughly cooked food. Avoid raw shellfish, rare seafood, and pre-cut fruit washed in local water. Stick to busy vendors where food is cooked fresh and served hot.

3. Wash hands frequently with soap and clean water, especially before eating and after using restrooms. Carry hand sanitizer with at least 60% alcohol as a backup.

4. Use bottled or purified water for brushing your teeth and rinsing your mouth, particularly in guesthouses or budget accommodations where water treatment may be unreliable.

5. Seek medical attention immediately if you develop severe watery diarrhea. Cholera can cause life-threatening dehydration in hours. Oral rehydration salts are critical. Phuket has hospitals with adequate treatment facilities, but early action matters.

Vaccination with an oral cholera vaccine is recommended for travelers planning extended stays or for those with underlying health conditions. Consult a travel clinic at least two weeks before departure.