Cholera: Symptoms, Risks and Prevention for UK Travellers

In short: Cholera is a bacterial infection of the gut, caught from contaminated water or food, that can cause sudden, severe watery diarrhoea and dangerous dehydration. The risk for most UK travellers is very low if they follow food and water hygiene advice. Vaccination is not needed for most trips, but may be recommended for people such as aid workers or those travelling to outbreak areas with poor access to safe water and medical care.

This guide, written by a Ready Health prescribing pharmacist, explains how cholera spreads, the symptoms to watch for, and how travellers can reduce their risk.

What is cholera?

Cholera is caused by the bacterium Vibrio cholerae. It spreads mainly through drinking water or eating food contaminated with faeces from an infected person. It is linked to poor sanitation and lack of clean water, and outbreaks often follow conflict, flooding or other emergencies. Cholera remains a problem in parts of Africa, Asia, the Middle East and the Caribbean, and outbreaks change over time, so check up-to-date country information before you travel.

What are the symptoms of cholera?

• Sudden, large amounts of watery diarrhoea (sometimes described as looking like rice water)
• Nausea and vomiting
• Signs of dehydration: intense thirst, dry mouth, passing little urine, dizziness, fast heartbeat and muscle cramps

Symptoms usually begin from a few hours to around 5 days after infection. Many infected people have mild symptoms or none at all, but severe cases can lead to dehydration and shock within hours if not treated.

How is cholera treated?

The most important treatment is replacing lost fluids and salts quickly, usually with oral rehydration solution. Severe cases need intravenous fluids in hospital, and antibiotics may be used in some cases. With prompt rehydration, the risk of death is very low. If you develop severe watery diarrhoea during or after travel, seek medical help urgently and mention where you have been.

Who is at risk of cholera when travelling?

For most travellers the risk is extremely low. It is higher for:

• Humanitarian, disaster relief and healthcare workers in outbreak or refugee settings
• People travelling to areas with active outbreaks, especially where clean water and medical care are limited
• People who may drink untreated water or eat raw or undercooked seafood in affected areas

How can I prevent cholera?

• Drink bottled water with an intact seal, or water that has been boiled or properly treated.
• Avoid ice unless made from safe water.
• Eat food that is freshly cooked and served piping hot; avoid raw or undercooked shellfish and seafood.
• Peel fruit yourself and avoid salads that may have been washed in unsafe water.
• Wash your hands with soap and safe water, especially before eating and after using the toilet; carry alcohol hand gel as a back-up.
• Pack oral rehydration sachets in your travel kit.

Is there a cholera vaccine?

Yes. Two oral (by mouth) cholera vaccines are licensed in the UK, although availability can vary:

UK guidance from the UKHSA Green Book and TravelHealthPro is that cholera vaccine is not recommended for most travellers. A clinician will look at your destination, activities, length of stay and health before advising whether vaccination is appropriate. Vaccination does not give complete protection, so food and water precautions still matter.

Frequently asked questions

Do I need a cholera vaccine to enter a country?

No country officially requires cholera vaccination for entry. The decision is based on your individual risk.

How long before travel should I be vaccinated?

The inactivated vaccine course should be completed at least 1 week before travel; the live vaccine should be taken at least 10 days before possible exposure. Seek advice 6 to 8 weeks before you go if you can.

Can cholera be caught in the UK?

Cholera is not spread within the UK. The rare cases seen here are almost always in people who caught it abroad.

Can I take antimalarials at the same time as the live cholera vaccine?

Some antimalarials and antibiotics can affect how well the live oral vaccine works, so timing may need to be planned. Tell the clinician about all your medicines.

Key takeaways

• Cholera spreads through contaminated water and food and can cause rapid dehydration.
• Most travellers are at very low risk if they follow food, water and hand hygiene advice.
• Vaccination is reserved for people at higher risk, such as aid workers and those visiting outbreak areas with poor access to clean water.
• Seek urgent help for severe watery diarrhoea after travel.

Sources and further reading

• TravelHealthPro (NaTHNaC): Cholera
• UKHSA Green Book: Cholera (chapter 14)
• NHS: Cholera

Last reviewed: October 2026 by Shamir Patel, Independent Prescribing Pharmacist, Ready Health. This article is general information and does not replace advice from your own clinician. Brand names are trademarks of their respective owners.

If you are travelling from Wigan, Standish, Chorley or Bolton and want personalised advice, you can book a travel clinic consultation at Ready Health. Read more about our cholera vaccination assessment.