Traveling in tropical
countries always brings higher risks because bacteria
can grow fast with this climate. Food and waterborne
diseases are the number one cause of illness in
travelers. Travelers' Diarrhea can be caused by
viruses, bacteria, or parasites, which are found
throughout the region and can contaminate food or
water. Infections may cause diarrhea and vomiting
(Escherichia coli O157-H7, Salmonella, Cholera,
Diphtheria, Tetanus, and Pertussis), fever (Typhoid
Fever and toxoplasmosis), or liver damage (Hepatitis,
Viral, Type A, Type B). Make sure your food and
drinking water are safe (Contaminated Food and Drink).
Malaria is a preventable infection that can be fatal
if left untreated. Prevent infection by taking
prescription anti malarial drugs and protecting
yourself against mosquito bites. Travelers to some
areas in Southeast Asia may be at risk for malaria.
Dengue Fever, Lymphatic Filariasis, Japanese
Encephalitis, and Plague are diseases carried by
insects that also occur in this region. Protecting
yourself against insect bites will help to prevent
these diseases. are diseases carried by insects
that also occur in this region. Protecting yourself
against insect bites will help to prevent these
Prepare yourself well before you take off. Ask your
doctor for the the International Certificate of
Vaccination, which records all your vaccinations. If
you take any medicines with you, ask your doctor to
make a prescription so you will not get into trouble
with the customs. Valid vaccination certificates of
small-fox, cholera and yellow fever are required from
those coming from infected areas. It is
recommended to ask your doctor about an up to date
status of necessary vaccinations because the medical
advises will vary from country to country and are
sometimes updated very rapid.
Recommended vaccines (as appropriate for age):
See your doctor at least 4–6 weeks before your trip
to allow time for shots to take effect.
Hepatitis A or immune globulin (IG).
Hepatitis B if you might be exposed to blood (for
example, health-care workers), have sexual contact
with the local population, stay longer than 6 months
in the region, or be exposed through medical
Japanese encephalitis, only if you plan to visit rural
areas for 4 weeks or more, except under special
circumstances, such as a known outbreak of Japanese
Rabies, if you might be exposed to wild or domestic
animals through your recreation.
Typhoid vaccination is particularly important because
of the presence of S. typhi strains resistant to
multiple antibiotics in this region.
As needed, booster doses for tetanus-diphtheria and
measles, and a one-time dose of polio for adults.
Hepatitis B vaccine is now recommended for all infants
and for children ages 11–12 years who did not
complete the series as infants.
Wash hands often with soap and water.
Drink only bottled or boiled water, or carbonated
(bubbly) drinks in cans or bottles. Avoid tap water,
fountain drinks, and ice cubes. If this is not
possible, make water safer by BOTH filtering through
an “absolute 1-micron or less” filter AND adding
iodine tablets to the filtered water. “Absolute
1-micron filters” are found in camping/outdoor
Eat only thoroughly cooked food or fruits and
vegetables you have peeled yourself. Remember: boil
it, cook it, peel it, or forget it.
If you visit an area where there is risk for malaria,
take your malaria prevention medication before,
during, and after travel, as directed. (See your
doctor for a prescription.) Protect yourself from
insects by remaining in well-screened areas, using
repellents (applied sparingly at 4-hour intervals),
and wearing long-sleeved shirts and long pants from
dusk through dawn.
To prevent fungal and parasitic infections, keep feet
clean and dry, and do not go barefoot.
Always use latex condoms to reduce the risk of HIV and
other sexually transmitted diseases.
Don’t eat food purchased from street
Don’t drink beverages with ice.
Don’t eat dairy products unless you know they have
Don’t share needles with anyone.
Don’t handle animals (especially monkeys, dogs, and
cats), to avoid bites and serious diseases (including
rabies and plague).
Don’t swim in fresh water. Salt water is usually
Long-sleeved shirt and long pants to wear while
outside whenever possible, to prevent illnesses
carried by insects (e.g., malaria, dengue, filariasis,
and Japanese encephalitis).
Insect repellent containing DEET
(diethylmethyltoluamide), in 30%–35% strength for
adults and 6%–10% for children.
Over-the-counter antidiarrheal medicine to take if you
Iodine tablets and water filters to purify water if
bottled water is not available. See Do’s above for
more detailed information about water filters.
Prescription medications: make sure you have enough to
last during your trip, as well as a copy of the
Considering that Indonesia is a tropical resort,
visitors should be aware of getting sunburn, so it is
advisable to wear a hat as protection from the
fierceness of midday sun.
If you have visited a malaria-risk area, continue
taking your antimalarial drug for 4 weeks
(chloroquine, Lariam®, doxycycline) or seven days
(Malarone™) after leaving the risk area. Travelers
who become ill with a fever or flu-like illness while
traveling in a malaria-risk area and up to 1 year
after returning home should seek prompt medical
attention and should tell the physician their travel
This document is not a complete
medical guide for travelers to this region. Consult
with your doctor for specific information related to
your needs and your medical history; recommendations
may differ for pregnant women, young children, and
persons who have chronic medical conditions.