Listeriosis (Listeria monocytogenes) | CDC

NOTE: A surveillance case definition is a set of uniform criteria used to define a disease for public health surveillance. Surveillance case definitions enable public health officials to classify and count cases consistently across reporting jurisdictions. Surveillance case definitions are not intended to be used by healthcare providers for making a clinical diagnosis or determining how to meet an individual patient’s health needs.

Clinical Description

Infection caused by Listeria monocytogenes, which may produce any of several clinical syndromes, including stillbirth, listeriosis of the newborn, meningitis, bacteremia, or localized infections

Laboratory Criteria For Diagnosis

Isolation of L. monocytogenes from a normally sterile site (e.g., blood or cerebrospinal fluid or, less commonly, joint, pleural, or pericardial fluid)

Case Classification

Confirmed

A clinically compatible case that is laboratory confirmed

Comments

The 1997 case definition appearing on this page was previously published in the 1990 MMWR Recommendations and Reports titled Case Definitions for Public Health Surveillance.1 Thus, the 1990 and 1997 versions of the case definition are identical.

References(s)

1. CDC. (1990). Case Definitions for Public Health Surveillance. MMWR, 39(RR-13), 1-43. https://www.cdc.gov/mmwr/preview/mmwrhtml/00025629.htm

Related Case Definition(s)

Page last reviewed: April 16, 2021