You should avoid mosquito bites to prevent malaria.

You may need to take prescription medicine before, during, and after your trip to prevent malaria, depending on your travel plans, such as where you are going, when you are traveling, and if you are spending a lot of time outdoors or sleeping outside. Effective options would include doxycycline or atovaquone/proguanil in the southern part of the country in the provinces of Tay Ninh, Song Be, Lam Dong, Ninh Thuan, Khanh Hoa, Dac Lac, Gia Lai and Kon Tum. All other areas doxycycline, atovaquone/proguanil or mefloquine..

Malaria is present throughout the year in rural areas, except no risk in the Red River Delta and the coastal plain north of Nha Trang.; no risk in Hanoi, Ho Chi Minh City (Saigon), Da Nang, Nha Trang, Qui Nhon and Haiphong.

Rabies can be found in dogs, bats, and other mammals in this country, but it is not a major risk to most travellers. The vaccine is only recommended for these groups:

• Travellers involved in outdoor and other activities in remote areas that put them at risk for animal bites (such as adventure travel and caving).
• People who will be working with or around animals (such as veterinarians, wildlife professionals, and researchers).
• People who are taking long trips or moving to remote areas

Make sure you are up-to-date on routine vaccines before every trip, such as:

• measles-mumps-rubella (MMR) vaccine
• diphtheria-tetanus-pertussis vaccine
• varicella (chickenpox) vaccine
• influenza vaccine

Dengue

Dengue fever is an infection transmitted by mosquitoes in tropical and subtropical areas of the world. There is no vaccine to prevent infection, so you should protect yourself from mosquito bites at all times in dengue areas.

Japanese encephalitis vaccine

Japanese encephalitis is found in many part of Asia, the Indian subcontinent, Southeast Asia and China, especially in the wet season

You may need this vaccine if:

• Your trip will last more than a month, depending on where in the country you are going and what time of year you are traveling.
• You plan to spend extended periods in rural areas or will be spending a lot of time outdoors

Melioidosis

Melioidosis is an infectious disease caused by a bacterium (Burkholderia pseudomallei) which lives in soil and water. It is an important public health issue in parts of Vietnam and northern Australia.

In endemic areas, people (rice-paddy farmers in particular) are warned to avoid contact with soil, mud, and surface water where possible

Plague

Plague is a serious infection caused by the bacteria Yersinia pestis. Humans can catch the infection via infected fleas or by inhalation. Untreated plague can be rapidly fatal, so diagnosis and early treatment are essential.

Soil-transmitted helminths

Wearing enclosed footwear in undeveloped areas is important to prevent hookworm. Hookworms penetrate through intact skin such as walking with bare feet, and can cause severe gastrointestinal and skin infections.

Travellers diarrhoea

Traveller’s diarrhoea affects roughly 20-50% of overseas travellers. It is caused by ingesting contaminated food or water. The bacteria that trigger the illness may appear harmless to the local population, usually because they have developed immunity to them. Symptoms include abdominal bloating, cramps, nausea, fevers and diarrhoea.

Tips to prevent traveller’s diarrhoea:

• Avoid contaminated foods such as raw or peeled vegetables, undercooked meats, unpasteurised dairy products and food from street vendors.
• Avoid drinking or brushing your teeth with tap water
• Buy bottled water to drink
• Boil tap water for at least 5 minutes before drinking it
• Avoid drinks that contain ice
• Avoid using tap water to wash your fruit and vegetables
• Wash your hands and eat at reputable restaurants.

Tuberculosis

Tuberculosis is a disease caused by infection with the bacteria Mycobacterium tuberculosis. Tuberculosis can damage a person’s lungs or other parts of the body and cause serious illness.

• Avoid exposure to people who have active tuberculosis.
• Only consume pasteurized milk products.
• Travellers at higher risk should be tested for tuberculosis upon their return home.
• There is a vaccine available which confers partial protection. Speak to your doctor to determine if this is recommended.

Zika

Zika virus is a mild febrile illness, spread via the bite of an infected mosquito or by having sex with an infected person. Studies have shown that Zika virus infection in a pregnant woman can be transmitted to the baby, causing congenital problems such as microcephaly.

The best way to prevent Zika is to protect yourself from mosquito bites. Pregnant women should consider deferring travel to high risk countries