Southeast Asia is the most popular overseas destination region for Australian travellers, with Thailand, Bali (Indonesia), and Vietnam drawing millions of visitors each year. The tropical climate, diverse food culture, and mix of urban and rural environments create a range of health considerations. Most travellers will need several vaccinations beyond their routine schedule, and mosquito-borne diseases like dengue are widespread across the region.
Most travellers to Southeast Asia should consider the following vaccines:
Malaria risk varies significantly across Southeast Asia. Major tourist areas in Thailand, Malaysia, Singapore, and Bali have negligible risk. However, rural and border areas in Myanmar, Cambodia, Laos, and parts of Vietnam carry moderate to high risk, particularly during and after the wet season. Prophylaxis is recommended for travellers visiting rural or forested areas in these countries.
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Most travellers to Southeast Asia should have Hepatitis A, Hepatitis B, and Typhoid vaccinations. Japanese Encephalitis is recommended for stays over one month or travel to rural rice-growing areas. Rabies pre-exposure vaccination is recommended for adventure travellers, cyclists, and those visiting areas with limited medical access. Cholera vaccine may be considered for high-risk travellers. Your GP or travel clinic can provide personalised advice based on your specific itinerary.
It depends on your specific itinerary. Major tourist areas in Thailand, Bali, Singapore, and Malaysia have negligible malaria risk and prophylaxis is generally not needed. However, rural and border areas in Myanmar, Cambodia, Laos, and parts of Vietnam carry significant risk, and antimalarial prophylaxis is recommended. Check your specific destinations with a travel health professional.
No. Tap water is not safe to drink in most of Southeast Asia. Drink bottled water (check the seal is intact), boiled water, or water treated with a reliable filter. Avoid ice in drinks unless you are confident it was made from purified water (most hotels and reputable restaurants use purified ice).
No Southeast Asian countries require Yellow Fever vaccination for direct arrivals from Australia. However, some countries (including Thailand, Malaysia, and Indonesia) require proof of Yellow Fever vaccination if you are arriving from or have recently transited through a Yellow Fever endemic country in Africa or South America.
Expect to pay $200–$600 total depending on which vaccines you need. Hepatitis A costs $60–$90 per dose, Typhoid $50–$70, and Japanese Encephalitis $300–$400 for the full course. These costs are in addition to any GP consultation fee. Most travel vaccines are not covered by Medicare.
Ideally 6–8 weeks before departure. Japanese Encephalitis vaccine requires 2 doses given 28 days apart. Hepatitis B requires 3 doses over 6 months (though an accelerated schedule is available). Even if you are leaving sooner, it is still worth seeing a travel clinic — some vaccines provide protection within days.
Dengue fever is the most common travel-acquired infection from Southeast Asia. It is transmitted by Aedes mosquitoes which bite during the day, particularly around dawn and dusk. There is no vaccine or specific treatment. Prevention relies on mosquito bite avoidance. Traveller's diarrhoea is also extremely common — practice careful food and water hygiene.
Yes. Rabies is present throughout Southeast Asia, particularly in dogs, cats, and monkeys. Bali has a well-documented rabies problem in its stray dog population. Monkey bites at temples and tourist sites are common in Bali, Thailand, and Cambodia. If bitten or scratched by an animal, wash the wound immediately and seek urgent medical attention. Pre-exposure vaccination simplifies post-bite treatment.
Last updated: April 2026