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Home > Health Library > Yellow Fever Vaccine: What You Need to Know
Yellow fever vaccine can prevent yellow fever. Yellow fever is a serious disease caused by the yellow fever virus. There is no medicine to treat or cure yellow fever.
Yellow fever virus is spread by the bite of an infected mosquito. It is found in parts of Africa and South America.
The majority of people with yellow fever virus infections will either not have symptoms, or have mild disease and completely recover. But some people will develop severe disease.
Symptoms and signs of yellow fever include:
More severe symptoms of yellow fever can include:
Severe yellow fever can cause death in 30% to 60% of affected people.
In addition to getting vaccinated, you can also protect yourself from yellow fever by avoiding mosquito bites:
Yellow fever vaccine is a live vaccine containing weakened, live yellow fever virus. It is given as a single shot. One dose provides lifelong protection for most people.
Yellow fever vaccine is recommended for:
Yellow fever vaccine is given only at designated vaccination centers. After getting the vaccine, you will be given an "International Certificate of Vaccination or Prophylaxis" (ICVP, sometimes called the "yellow card"). You will need this card as proof of vaccination to enter certain countries. If you don't have it, you might be required to get yellow fever vaccine upon entering the country, or be forced to wait for up to 6 days to make sure you are not infected.
Do not donate blood for 14 days after vaccination, because there is a risk of passing vaccine virus to others during that period.
Discuss your itinerary with your health care provider before you get your yellow fever vaccination. You can visit CDC's Travelers' Health website at www.cdc.gov/travel to learn if yellow fever vaccination is recommended or required based on your travel location.
Tell your vaccine provider if the person getting the vaccine:
People with minor illnesses, such as a cold, may be vaccinated. People who are moderately or severely ill should usually wait until they recover before getting yellow fever vaccine.
In some cases, your health care provider may decide to postpone yellow fever vaccination to a future visit.
If you cannot get yellow fever vaccine for medical reasons and you are traveling to a country with a yellow fever vaccination entry requirement, your doctor will need to fill out the Medical Contraindications to Vaccination section of your yellow card. In addition, your doctor should give you a waiver letter. If you plan to use a waiver, you can contact the embassies of countries you plan to visit for more information.
People 60 years and older and people with weakened immune systems might be more likely to experience serious reactions to yellow fever vaccine.
People sometimes faint after medical procedures, including vaccination. Tell your provider if you feel dizzy or have vision changes or ringing in the ears.
As with any medicine, there is a remote chance of a vaccine causing a severe allergic reaction, other serious injury, or death.
An allergic reaction could occur after the vaccinated person leaves the clinic. If you see signs of a severe allergic reaction (hives, swelling of the face and throat, difficulty breathing, a fast heartbeat, dizziness, or weakness), call 9-1-1 and get the person to the nearest hospital.
For other signs that concern you, call your health care provider.
Adverse reactions should be reported to the Vaccine Adverse Event Reporting System (VAERS). Your health care provider will usually file this report, or you can do it yourself. Visit the VAERS website at www.vaers.hhs.gov or call 1-800-822-7967. VAERS is only for reporting reactions, and VAERS staff do not give medical advice.
Vaccine Information Statement
Yellow Fever Vaccine
Department of Health and Human Services
Centers for Disease Control and Prevention
Many Vaccine Information Statements are available in Spanish and other languages. See www.immunize.org/vis.
Muchas hojas de información sobre vacunas están disponibles en español y en otros idiomas. Visite www.immunize.org/vis.
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