TY - JOUR
T1 - Prevalence and level of Listeria monocytogenes in ice cream linked to a listeriosis outbreak in the United States
AU - Chen, Yi
AU - Burall, Laurel S.
AU - Macarisin, Dumitru
AU - Pouillot, Régis
AU - Strain, Errol
AU - De Jesus, Antonio J.
AU - Laasri, Anna
AU - Wang, Hua
AU - Ali, Laila
AU - Tatavarthy, Aparna
AU - Zhang, Guodong
AU - Hu, Lijun
AU - Day, James
AU - Kang, Jihun
AU - Sahu, Surasri
AU - Srinivasan, Devayani
AU - Klontz, Karl
AU - Parish, Mickey
AU - Evans, Peter S.
AU - Brown, Eric W.
AU - Hammack, Thomas S.
AU - Zink, Donald L.
AU - Datta, Atin R.
N1 - Funding Information:
This research was funded in part by the University of Maryland Joint Institute for Food Safety and Applied Nutrition through a cooperative agreement with the U.S. Food and Drug Administration (FDA; FDU001418) and in part by an appointment to the Research Participation Program at the FDA Center for Food Safety and Applied Nutrition administered by the Oak Ridge Institute for Science and Education through an interagency agreement between the U.S. Department of Energy and the FDA. The authors thank D. Charles Hunt (Kansas Bureau of Epidemiology and Public Health Informatics, Department of Health and the Environment, Topeka, KS) for providing information on hospital kitchen sampling. The findings and conclusions in this report are those of the authors and do not necessarily represent the official position of the FDA.
Publisher Copyright:
© 2016, International Association for Food Protection. All rights reserved.
PY - 2016/11
Y1 - 2016/11
N2 - 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.
AB - 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.
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U2 - 10.4315/0362-028X.JFP-16-208
DO - 10.4315/0362-028X.JFP-16-208
M3 - Article
AN - SCOPUS:84992738351
VL - 79
SP - 1828
EP - 1832
JO - Journal of Food Protection
JF - Journal of Food Protection
SN - 0362-028X
IS - 11
ER -