What are the risk factors for severe chickenpox in neonates?

Updated: Nov 30, 2018
  • Author: Kirsten A Bechtel, MD; Chief Editor: Russell W Steele, MD  more...
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Risk factors for severe varicella in neonates are as follows:

  • The first month of life: A neonate’s first month of life is a susceptible period for severe varicella, especially if the mother is seronegative.

  • Early delivery: Delivery before 28 weeks’ gestation also renders a baby susceptible because transplacental transfer of immunoglobulin G (IgG) antibodies occurs after this time.

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