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Streptococcal Infection, Neonatal Group B

Case definition

Confirmed case

Clinical illness in an infant up to and including 31 days of age with laboratory confirmation of infection:

  • isolation of group B Streptococcus (Streptococcus agalactiae) from a normally sterile site (such as blood or cerebrospinal fluid)

OR

  • demonstration of group B Streptococcus DNA in a normally sterile site.

Probable case

Clinical illness in an infant up to and including 31 days of age with laboratory confirmation of infection:

  • detection of group B Streptococcus antigen in a normally sterile site.

Definition of Clinical Illness

There are two forms of clinical illness: early onset disease (1-7 days), characterized by sepsis, respiratory distress, apnea, shock, pneumonia and meningitis; and late onset disease (7 days to 1 month), characterized by bacteremia, meningitis and other focal infections.
SOURCE: Streptococcal Infection, Neonatal Group B ( )
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