Risk factorsBy Mayo Clinic staff
An infant is at increased risk of developing group B strep disease if:
- The mother carries group B strep in her body
- The baby is born prematurely (earlier than 37 weeks)
- The mother's water breaks 18 hours or more before delivery
- The mother has an infection of the placental tissues and amniotic fluid (chorioamnionitis)
- Group B strep bacteria have been detected in the mother's urine (bacteriuria) during pregnancy (either her current pregnancy or previous pregnancies)
- The mother's temperature is greater than 100 F (38 C) during labor
- The mother previously delivered an infant with group B strep disease
You're at increased risk of a group B strep infection if:
- You have a medical condition that impairs your immune system, such as diabetes, HIV infection, cancer or liver disease
- You're older than 65, particularly if you live in a nursing home
- Puopolo KM, et al. Group B streptococcal infection in neonates and young infants. http://www.uptodate.com/home. Accessed May 30, 2013.
- Group B strep. Centers for Disease Control and Prevention. http://www.cdc.gov/groupbstrep/about/index.html. Accessed May 30, 2013.
- Hay WW, et al. Current Diagnosis & Treatment: Pediatrics. 21st ed. New York, N.Y.: The McGraw-Hill Companies; 2012. http://www.accessmedicine.com/resourceTOC.aspx?resourceID=14. Accessed May 30, 2013.
- Kliegman RM, et al. Nelson Textbook of Pediatrics. 19th ed. Philadelphia, Pa.: Saunders Elsevier; 2011. http://www.mdconsult.com/das/book/body/208746819-6/0/1608/0.html. Accessed May 30, 2013.
- Barshak M, et al. Group B streptococcal infections in nonpregnant adults. http://www.uptodate.com/home. Accessed May 30, 2013.
- Centers for Disease Control and Prevention, et al. Prevention of perinatal group B streptococcal disease. MMWR. 2010;59:1. http://www.cdc.gov/groupbstrep/guidelines/guidelines.html. Accessed May 30, 2013.