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Generic Name
Encephalitis vaccine
Trade Name
Risk Category
  • Positive evidence of human fetal risk exists.
  • Potential benefits may warrant use of the drug in pregnant women despite potential risks (e.g. life threatening situations or serious illness).
  • Studies in animals and/or humans have demonstrated fetal abnormalities.
  • Fetal risk involved in use of drug, clearly outweighs potential benefit.
  • Contraindicated in women who are or may become pregnant. Don’t use.
FDA Pregnancy Risk Categories

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  • Live attenuated virus vaccine.
  • Fetal Risk
    Fetal Risk
  • Embryo– and fetotoxic, teratogenic in animals.
  • It causes necrosis and hemorrhage in the embryos and uterus, which is attached to embryo and walls of uterus)">placental infrarcts later in pregnancy and congenital defects including microcephaly, hydrocephaly, cataract and porenecephaly.
  • Maternal infection during pregnancy can result in abortions, stillbirth, destruction of fetal cerebral cortex, microcephaly and microphthalmia.
  • Limited human data, reported single report of exposure in second trimester resulted in still birth with hydropic changes, autolysis of the brain inflammatory infiltrate in the heart, intestine, uterus, trachea and uterus, which is attached to embryo and walls of uterus)">placental infarction and thrombosis.
  • Breast Feeding
    Breast Feeding
  • Unknown excretion into human breast milk.
  • Other Trade Names
    The information on this Web site is not intended as a substitute for the advice and care of your doctor or other health-care provider. Always consult your doctor if you have any questions about exposures during pregnancy and lactation, and before you take any medications. Please read the Terms and Conditions before using this website.
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