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 this medication.
Allergic reactions: Rarely, this vaccine may cause severe allergic reactions. If you notice the signs of a severe allergic reaction (hives; trouble breathing or swallowing; or swelling of the lips, face, throat, or tongue) get medical attention immediately.
Bleeding problems: If you have blood clotting problems or are currently taking blood thinners (oral anticoagulants), notify your doctor prior to injection.
Immunocompromised people: Typhoid vaccine may not be as effective for people with a compromised immune system (e.g., people with AIDS, people receiving chemotherapy, or people taking any medication that suppresses the immune system). People with any of these conditions should discuss with their doctor how this medication may affect their medical condition, how their medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
Infection and fever: Delay receiving the typhoid vaccine if you have an infection or fever, unless, in the opinion of your doctor, the benefits of receiving the vaccine while you are ill outweigh the risks.
Protection against typhoid: Not all people who take the vaccine will be fully protected against typhoid. This is especially so if the vaccine is given less than 2 weeks before arriving in the areas with typhoid exposure risk.
Pregnancy: The effects of this medication on an unborn baby are not known. This medication should not be used during pregnancy unless the benefits outweigh the risks. If you are or may be pregnant, discuss the risks and benefits of using this vaccine with your doctor.
Breast feeding: It is not known if typhoid vaccine passes into breast milk. If you are a breast-feeding mother and are taking this medication, it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.
Children: The safety and effectiveness of using this medication have not been established for children under 2 years of age.