title: Jarisch-Herxheimer reaction triggered by group B streptococcus intrapartum antibiotic prophylaxis.
abstract: BACKGROUND
  The Jarisch-Herxheimer reaction is an acute systemic event that can occur during the treatment of spirochetal infections. During pregnancy, it can cause signs and symptoms in both the mother and fetus, including fever, tachycardia, uterine contractions, and fetal heart rate pattern changes.
  
  
  METHODS
  A pregnant woman with limited prenatal care presented at 34 weeks of gestation in preterm labor with possible genital herpes. She received ampicillin for group B Streptococcus prophylaxis. Subsequently, she experienced subjective fever and late fetal heart rate decelerations prompting repeat cesarean delivery. Postpartum, her genital lesions were diagnosed as secondary syphilis, and her newborn had congenital syphilis.
  
  
  CONCLUSIONS
  Beta-lactam antibiotics for group B Streptococcus intrapartum prophylaxis can trigger the Jarisch-Herxhemer reaction in patients with undiagnosed syphilis resulting in unanticipated changes in maternal and fetal well-being.
authors.affiliation: From the Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Parkland Health and Hospital System, Dallas, Texas.
authors.forename: Martha W F
authors.initials: MWF
authors.lastname: Rac
authors.forename: Laura G
authors.initials: LG
authors.lastname: Greer
authors.forename: George D
authors.initials: GD
authors.lastname: Wendel
mesh_terms: D000667:Ampicillin / Q000009:adverse effects*; D000900:Anti-Bacterial Agents / Q000009:adverse effects*; D019072:Antibiotic Prophylaxis / Q000009:adverse effects; D005260:Female; D005334:Fever / Q000209:etiology; D006340:Heart Rate, Fetal; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000175:diagnosis* / Q000188:drug therapy; D013290:Streptococcal Infections / Q000517:prevention & control*; D013292:Streptococcus agalactiae; D013587:Syphilis / Q000175:diagnosis* / Q000188:drug therapy; D013590:Syphilis, Congenital / Q000188:drug therapy / Q000209:etiology; D055815:Young Adult
chemical_list: D000900:Anti-Bacterial Agents; D000667:Ampicillin