How does the incidence of Listeria infection (listeriosis) vary by age?

Updated: Jan 09, 2018
  • Author: Terence Zach, MD; Chief Editor: Russell W Steele, MD  more...
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Answer

Listeria infections occur most often in newborns and elderly patients. Neonatal infections can be subdivided into early onset and late-onset disease.

  • Early onset neonatal infections (< 5 d) begin at a mean age of 1.5 days.

  • Late-onset neonatal infections (>5 d) begin at a mean age of 14 days.

  • Postnatal infections usually occur in immunocompromised children and are less common than neonatal infections.


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