1) It is very important that you or your child return to your doctor at the right time for the second dose (as directed by your doctor). Be sure to tell your doctor about any side effects that occur after you receive this vaccine. This vaccine may cause allergic reaction called anaphylaxis. Anaphylaxis requires immediate medical attention. Tell your doctor right away if you or your child have a rash, itching, swelling of the tongue and throat, or trouble breathing after you receive the vaccine. 2) Side effects from this vaccine could occur up to 30 days after you receive the shot. Be sure to tell your doctor about any serious side effects that occur during that time. 3) Yellow fever vaccine may cause a serious side effect called neurotropic disease or post-vaccinal encephalitis. Check with your doctor right away if you or your child have confusion, irritability, headache, seizures, stiff neck, or vomiting. 4)This vaccine may cause allergic reactions affecting multiple body organs (e.g., liver or kidney). Check with your doctor right away if you have the following symptoms: fever, dark urine, headache, rash, stomach pain, unusual tiredness, or yellow eyes or skin. 5)Since the vaccine may not protect everyone completely, it is very important that you use precautions to reduce your chance of mosquito bites. These include using insect repellents and mosquito nets, wearing protective clothing, and staying indoors during twilight and after dark. 6) The stopper of the vial contains dry natural rubber (a derivative of latex), which may cause allergic reactions in people who are sensitive to latex. Tell your doctor if you have a latex allergy before you start receiving this vaccine. Tell your doctor if you are receiving a treatment or using a medicine that causes a weak immune system. This may include radiation therapy, steroid medicines, or cancer medicines