What is typhoid fever?
Typhoid fever is a serious infection caused by a type of bacteria. It is common in
the rest of the world, but less so in the U.S. Most cases in this country are in people
who got the disease while traveling elsewhere.
You can get the disease by eating food or drinking water that is contaminated with
What causes typhoid fever?
Typhoid fever is caused by the bacteria Salmonella typhi. The bacteria are passed
on by eating food or drinking water that has been contaminated by someone with the
disease or who is a carrier of the infection. The bacteria are found in the infected
person’s stool. They may get onto the person's hands or other parts of the body if
there are poor hygiene practices. You can also get the disease if water used for drinking
or washing food is contaminated with sewage containing the bacteria.
People who recover from typhoid fever can sometimes still have the bacteria in their
stool and can pass them on to other people. They are called "carriers."
What are the symptoms of typhoid fever?
Once the bacteria are in your body, they increase in number and spread into your blood.
You may not have symptoms for 6 to 30 days after the first exposure. Symptoms may
Fever from 102°F to 104°F (39°C to 40°C)
Loss of appetite
Sometimes a rash of flat, rose-colored spots
Constipation, vomiting, or diarrhea
The symptoms may look like other health problems. Always see your healthcare provider
for a diagnosis.
How is typhoid fever diagnosed?
Your healthcare provider will use blood tests or a stool sample to diagnose typhoid
fever. These tests can find the typhoid bacteria. But these tests are less accurate
if you have just come down with the disease. Because of this, your provider will also
look at your symptoms and travel history.
How is typhoid fever treated?
See your healthcare provider right away if you think you have any of the symptoms
of typhoid fever. Most otherwise healthy adults get better on their own. But some
people who are not treated may have a fever for weeks or months, and sometimes the
germ can spread to other parts of the body and cause serious complications.
Antibiotics are usually needed to treat typhoid fever.
Treatment will depend on your symptoms, age, and general health. It will also depend
on how severe the condition is.
It is important to remember that the danger of typhoid fever does not end when symptoms
go away. You could still be carrying the bacteria. The illness could also return.
Or you could pass the disease to other people. You should:
Take any antibiotics exactly as your healthcare provider tells you to
Always wash your hands after using the bathroom
Have a series of stool cultures. This is to make sure that the bacteria are no longer
in your body
What are possible complications of typhoid fever?
Complications of typhoid fever include intestinal bleeding, persistent fever and weakness,
and spread of the germ to various parts of the body. The complications can sometimes
Once your symptoms are gone, you may still have the typhoid bacteria in your body.
Follow up with your healthcare provider to make sure the bacteria are completely gone
and that you are not still a carrier. You will also need to practice good hygiene.
Wash your hands before and after you use the bathroom. You should also not make food
for anyone else until the bacteria are gone.
What can I do to prevent typhoid fever?
Typhoid fever is very common in developing countries. Travelers to Africa, Latin America,
and Asian countries—except Japan—are at highest risk. A vaccine is available and will
be recommended if you are traveling to high-risk locations or engaging in higher risk
activities while there. The best time to get it is 2 weeks before traveling. A booster
shot is advised every 2 years for people who are at high risk.
You can also prevent typhoid fever when traveling by:
Only using water that has been boiled or chemically disinfected for drinking or making
beverages, such as tea or coffee, and for brushing teeth
Washing your face and hands. You can also use an alcohol-based gel to clean your hands.
Washing and peeling fruits and vegetables
Washing eating utensils, pots, and pans
Washing the surfaces of tins, cans, and bottles that contain food or beverages before
Also don't eat food from street vendors. Any raw food could be contaminated. Stay
Fruits and vegetables, particularly those that cannot be peeled
Unpasteurized milk and milk products
Any fish caught in tropical reefs rather than the open ocean
Other tips for prevention:
When should I call my healthcare provider?
Call your healthcare provider right away if your symptoms return or get worse, or
you have new ones.
Key points about typhoid fever
Typhoid fever is a serious infection caused by bacteria.
In the U.S., most cases are in people who get the disease while traveling abroad.
Symptoms include a high fever, weakness, stomach pains, headache, and loss of appetite.
Sometimes, a rash of flat, rose-colored spots may appear.
Antibiotics are often used to treat the disease.
To prevent typhoid fever, drink only boiled or chemically disinfected water. Also
do not eat raw food that could be contaminated.
Talk to your healthcare provider about getting the typhoid vaccine if you will be
traveling to a high-risk area.
Tips to help you get the most from a visit to your healthcare provider:
Know the reason for your visit and what you want to happen.
Before your visit, write down questions you want answered.
Bring someone with you to help you ask questions and remember what your provider tells
At the visit, write down the name of a new diagnosis and any new medicines, treatments,
or tests. Also write down any new instructions your provider gives you.
Know why a new medicine or treatment is prescribed and how it will help you. Also
know what the side effects are.
Ask if your condition can be treated in other ways.
Know why a test or procedure is recommended and what the results could mean.
Know what to expect if you do not take the medicine or have the test or procedure.
If you have a follow-up appointment, write down the date, time, and purpose for that
Know how you can contact your provider if you have questions.