Prevalence and Level of Listeria monocytogenes in Ice Cream Linked to a Listeriosis Outbreak in the United States-Reference-Cited by-同舟云学术

Prevalence and Level of Listeria monocytogenes in Ice Cream Linked to a Listeriosis Outbreak in the United States

Published:2016-11-01 Issue:11 Volume:79 Page:1828-1832
ISSN:0362-028X
Container-title:Journal of Food Protection
language:en
Short-container-title:

Author:

CHEN YI¹,BURALL LAUREL S.²,MACARISIN DUMITRU¹,POUILLOT RÉGIS³,STRAIN ERROL³,DE JESUS ANTONIO J.¹,LAASRI ANNA¹,WANG HUA¹,ALI LAILA¹,TATAVARTHY APARNA¹,ZHANG GUODONG¹,HU LIJUN¹,DAY JAMES¹,KANG JIHUN²,SAHU SURASRI²,SRINIVASAN DEVAYANI²,KLONTZ KARL³,PARISH MICKEY⁴,EVANS PETER S.¹,BROWN ERIC W.¹,HAMMACK THOMAS S.¹,ZINK DONALD L.⁴,DATTA ATIN R.²

Affiliation:

1. 1U.S. Food and Drug Administration, Center for Food Safety and Applied Nutrition, Office of Regulatory Science, College Park, Maryland 20740

2. 2U.S. Food and Drug Administration, Center for Food Safety and Applied Nutrition, Office of Applied Research and Safety Assessment, Laurel, Maryland 20708, USA

3. 3Office of Analytics and Outreach, College Park, Maryland 20740

4. 4Office of the Center Director, College Park, Maryland 20740

Abstract

ABSTRACT A most-probable-number (MPN) method was used to enumerate Listeria monocytogenes in 2,320 commercial ice cream scoops manufactured on a production line that was implicated in a 2015 listeriosis outbreak in the United States. The analyzed samples were collected from seven lots produced in November 2014, December 2014, January 2015, and March 2015. L. monocytogenes was detected in 99% (2,307 of 2,320) of the tested samples (lower limit of detection, 0.03 MPN/g), 92% of which were contaminated at <20 MPN/g. The levels of L. monocytogenes in these samples had a geometric mean per lot of 0.15 to 7.1 MPN/g. The prevalence and enumeration data from an unprecedented large number of naturally contaminated ice cream products linked to a listeriosis outbreak provided a unique data set for further understanding the risk associated with L. monocytogenes contamination for highly susceptible populations.

Publisher

International Association for Food Protection

Subject

Microbiology,Food Science

Link

http://meridian.allenpress.com/jfp/article-pdf/79/11/1828/1684832/0362-028x_jfp-16-208.pdf

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