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Volume 24, Number 12—December 2018
Research

CTX-M-65 Extended-Spectrum β-Lactamase–Producing Salmonella enterica Serotype Infantis, United States1

Allison C. BrownComments to Author , Jessica C. Chen, Louise K. Francois Watkins, Davina Campbell, Jason P. Folster, Heather Tate, Jamie Wasilenko, Christine Van Tubbergen, and Cindy R. Friedman
Author affiliations: Centers for Disease Control and Prevention, Atlanta, Georgia, USA (A.C. Brown, J.C. Chen, L.K. Francois Watkins, D. Campbell, J.P. Folster, C. Van Tubbergen, C.R. Friedman); Food and Drug Administration, Laurel, Maryland, USA (H. Tate); US Department of Agriculture, Athens, Georgia, USA (J. Wasilenko)

Main Article

Table 3

Comparison of demographic and clinical characteristics of patients with CTX-M-65–positive isolates with patients infected with all Salmonella enterica serotype Infantis strains or other common Salmonella serotypes, FoodNet, United States, 2012–2015*

Characteristic
 CTX-M-65-positive Salmonella Infantis, pattern JFXX01.0787, n = 29*
All Salmonella Infantis, n = 723†
Other Salmonella, n = 21,285‡
Proportion§
 %
 p value
 Proportion§
 %
 p value
 Proportion§
 %
 p value
Female sex 20/29 69 Referent 403/722 56 0.16 11,067/21,258 52 0.07
Urine isolation 5/29 17 Referent 66/723 9 0.14 1,076/21,214 5 <0.01
Hospitalization 8/18 44 Referent 199/695 29 0.14 5,951/20,619 29 0.14
International travel 12/19 63 Referent 51/611 8 <0.01 1,431/16,496 9 <0.01

*Patient age range 0–82 y; median age (interquartile range) 25 (15–50) y.
†Patient age range 0–95 y; median age (interquartile range) 37 (12–58) y.
‡Patient age range 0–101 y; median age (interquartile range) 29 (6–54) y. Other Salmonella defined as the top 20 Salmonella enterica serotypes (excluding Infantis): Typhimurium, Enteritidis, Newport, Heidelberg, Javiana, Saintpaul, Montevideo, Agona, Oranienburg, Muenchen, Thompson, Hadar, Braenderup, Derby, I 4,[5],12:i:-, Paratyphi B var. L(+) tartrate+, Blockley, Anatum, Mississippi, Panama.
§Unknowns were excluded from the denominator.

Main Article

1Preliminary results from this analysis were presented at the International Salmonella and Salmonellosis Symposium, June 6–8, 2016, St. Malo, France, and at the International Association for Food Protection Annual Meeting, July 9–12, 2017, Tampa, Florida, USA.

Page created: November 20, 2018
Page updated: November 20, 2018
Page reviewed: November 20, 2018
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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