National enteric disease surveillance : Listeria annual summary, 2014
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National enteric disease surveillance : Listeria annual summary, 2014

Filetype[PDF-551.38 KB]


English
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Details:

  • Corporate Authors:
    National Center for Emerging and Zoonotic Infectious Diseases (U.S.). Division of Foodborne Waterborne, and Environmental Diseases.
  • Description:
    Listeria Initiative Data

    An overview of the Listeria Initiative surveillance system is available at http://www.cdc.gov/listeria/surveillance.html.

    For this report, a case of invasive listeriosis is defined as isolation of Listeria monocytogenes from a normally sterile site (e.g., blood or cerebrospinal fluid [CSF]) or from products of conception (e.g., amniotic fluid, placental or fetal tissue). For cases in which L. monocytogenes is isolated from multiple anatomical sites, the case is considered to be invasive if any isolate was obtained from a normally sterile site. For cases in which L. monocytogenes was isolated from multiple normally sterile anatomical sites, the annual summary reports the most invasive site, using a hierarchy (in descending order of invasiveness: CSF, bone or joint fluid, blood, other sterile site, and products of conception).

    Each mother-infant pair in episodes of pregnancy-associated listeriosis is reported as a single case, even when isolates are obtained from both the mother and the infant. The rationale is that an episode of pregnancy-associated listeriosis inherently involves both the mother and the infant, because the infant’s infection, in most cases, occurs because the mother ate contaminated food. Cases are classified as pregnancy-associated if illness occurs in a pregnant woman or infant ≤28 days old; all other cases are considered to not be associated with pregnancy.

    15_262348a_jackson_2014-listeriaannualsummary3508-v2.pdf

  • Subjects:
  • Document Type:
    Report
  • Genre:
    Annual Reports
  • Place as Subject:
    United States
  • Pages in Document:
    8 numbered pages
  • Collection(s):
  • Main Document Checksum:
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  • File Type:

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