Health Hazards in Vietnam
While life in the country is generally safe, there are a number of widespread infectious diseases that you should be aware. These include hepatitis A and B, traveler diarrhea, and food poisoning which can be a big problem in the countryside where hygiene standards are usually lower compared to the cities. It is best to avoid drinking tap water and drink from bottled water instead. Sunburn, sunstroke and dehydration may also pose a problem due to the heat.
Typhoid, dengue fever and malaria are also still common in the country.