Survey of ground beef for the detection of Mycobacterium avium paratuberculosis

Carmela V. Jaravata; Wayne L. Smith; Gabriel J. Rensen; Juliana Ruzante; James S Cullor

doi:10.1089/fpd.2006.54

Survey of ground beef for the detection of Mycobacterium avium paratuberculosis

Carmela V. Jaravata, Wayne L. Smith, Gabriel J. Rensen, Juliana Ruzante, James S Cullor

Population Health and Reproduction

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

Mycobacterium avium paratuberculosis (MAP) is thought to be associated with Crohn's disease in humans. Since Johne's disease affects dairy and beef cattle, meat may be a possible route of transmission of MAP to humans. In this study, we compared a rapid multiplex real time PCR assay and conventional culture to detect MAP in ground beef. The real time PCR assay amplifies both an internal sequence of the IS900 gene and an internal control targeting the ruminant-specific mt-cyt-b gene, in order to control for any false negative results. The sensitivity of this multiplex real time PCR assay on ground beef is 10¹ CFU/g and the sensitivity of conventional culture at 10 ³ CFU/g. Furthermore, we conducted a survey of 200 retail ground beef samples using this system and did not detect the presence of MAP.

Original language	English (US)
Pages (from-to)	103-106
Number of pages	4
Journal	Foodborne Pathogens and Disease
Volume	4
Issue number	1
DOIs	https://doi.org/10.1089/fpd.2006.54
State	Published - Mar 2007

ASJC Scopus subject areas

Microbiology
Applied Microbiology and Biotechnology
Infectious Diseases
Food Science

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title = "Survey of ground beef for the detection of Mycobacterium avium paratuberculosis",

abstract = "Mycobacterium avium paratuberculosis (MAP) is thought to be associated with Crohn's disease in humans. Since Johne's disease affects dairy and beef cattle, meat may be a possible route of transmission of MAP to humans. In this study, we compared a rapid multiplex real time PCR assay and conventional culture to detect MAP in ground beef. The real time PCR assay amplifies both an internal sequence of the IS900 gene and an internal control targeting the ruminant-specific mt-cyt-b gene, in order to control for any false negative results. The sensitivity of this multiplex real time PCR assay on ground beef is 101 CFU/g and the sensitivity of conventional culture at 10 3 CFU/g. Furthermore, we conducted a survey of 200 retail ground beef samples using this system and did not detect the presence of MAP.",

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