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YF Vax

YF Vax

(yellow-fever-vaccine)

Yellow Fever vaccine belongs to a group of medications known as vaccines. It is used to prevent yellow fever caused by a flavivirus and passed to humans who are bitten by an infected mosquito.

Available form

Dosage

Vaccine

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YF Vax information

Dosage

Side Effects

Available Form

Contraindications

Precautions

Warnings

The usual dose of this vaccine is 0.5 mL given as subcutaneous (under the skin)injection. A second dose, or “booster” dose, may be given after 10 years to boost the levels of antibodies in the blood, however, evidence demonstrates that the effectiveness of the yellow fever vaccine may last for at least 30 to 35 years.

This vaccine is given by a health care professional in a doctor's office, hospital, or clinic.

It takes 10 days for immunity to develop after using this vaccine, so it is important that this vaccine be given at least 10 days before entering an area where you may come into contact with the virus that causes yellow fever.

YF Vax (Yellow-fever-vaccine) is stored in the refrigerator and should not be allowed to freeze.

Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.

Before you begin using a medication, be sure to inform your doctor of any medical conditions or Allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use YF Vax (Yellow-fever-vaccine).

Allergic reactions: As with any vaccine, allergic reactions are possible with the yellow fever vaccine. Your doctor may want you to remain in the clinic or office for a period of time after receiving the vaccine, to ensure that you do not develop an allergic reaction.

Immune system: As with any vaccine, this vaccine may not be as effective for people with a weakened immune system (e.g., people with AIDS or cancer, people taking antirejection medications after an organ transplant, people receiving chemotherapy, people taking any medication that suppresses the immune system). If you or your child has a weakened immune system, the doctor may decide to postpone the vaccine until the immune system recovers.

Infection or fever: This vaccine should not be given to anyone who has an active infection or an illness associated with fever, unless the doctor decides that the benefits outweigh the risks.

Vaccine protection: As with any vaccine, this vaccine may not protect 100% of people who receive it and may not prevent infection in those people already infected with the virus.

Pregnancy: YF Vax (Yellow-fever-vaccine) should not be used during pregnancy unless the benefits outweigh the risks.

Breast-feeding: It is not known if yellow fever vaccine passes into breast milk. If you are a breast-feeding mother and are taking YF Vax (Yellow-fever-vaccine), it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.

Children: The safety and effectiveness of using YF Vax (Yellow-fever-vaccine) have not been established for children less than 9 months old. Infants less than 9 months old are at an increased risk of developing encephalitis as a result of receiving this vaccine.

Seniors: People over the age of 60 may be more at risk of developing complications from this vaccine.

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