Research Publications (Food Safety)

Richard Lu, BobBrooke Herrera, Heather D. Eshleman, Yang Fu, Alexander Bloom, Zhigang Li, David B. Sacks, Marcia B. Goldberg

C. George et al.

Shiga toxins (Stx1 and Stx2, also called verocytotoxins) are commonly associated with Shiga toxin-producing Escherichia coli (STEC) and Shigella dysenteriae type 1 (Tesh and O’Brien 1991). Recent studies have documented cases of stx carriage in other Shigella species, including S. sonnei linked to travel to Morocco (Nyholm et al. 2015) and S. flexneri with travel history to Caribbean (Gray et al. 2014, 2015).

Publication date: Available online 3 September 2015

Author(s): Chen Zhang, Peihua Niu, Yanying Hong, Ji Wang, Jingyun Zhang, Xuejun Ma

Publication date: January 2016
Source:LWT - Food Science and Technology, Volume 65
Author(s): Ji-Yeon Lee, Dong-Hyun Kang

Diarrhea causes significant morbidity and mortality in Indian children under 5 years of age. Flies carry enteric pathogens and may mediate foodborne infections. In this study, we characterized fly densities as a determinant of infectious diarrhea in a longitudinal cohort of 160 urban and 80 rural households with 1,274 individuals (27% under 5 years of age) in Vellore, India. Household questionnaires on living conditions were completed at enrollment.

Publication date: Available online 5 August 2015

Author(s): Kan Deng, Tingtao Chen, Qinglong Wu, Hongbo Xin, Qiang Wei, Ping Hu, Xiaolei Wang, Xin Wang, Hua Wei, Nagendra P. Shah

Publication date: 2 December 2015
, Volume 214
Author(s): Sigrun J. Hauge, Truls Nesbakken, Birgitte Moen, Ole-Johan Røtterud, Sissel Dommersnes, Ole Nesteng, Øyvin Østensvik, Ole Alvseike

Publication date: June–August 2015
, Volume 305, Issues 4–5
Author(s): Angela Lluque, Susan Mosquito, Cláudia Gomes, Maribel Riveros, David Durand, Drake H. Tilley, María Bernal, Ana Prada, Theresa J. Ochoa, Joaquim Ruiz

Publication date: June–August 2015
, Volume 305, Issues 4–5
Author(s): Armand Paauw, Debby Jonker, Guus Roeselers, Jonathan M.E. Heng, Roos H. Mars-Groenendijk, Hein Trip, E. Margo Molhoek, Hugo-Jan Jansen, Jan van der Plas, Ad L. de Jong, Joanna A. Majchrzykiewicz-Koehorst, Arjen G.C.L. Speksnijder

Publication date: January 2016
, Volume 59
Author(s): Chunmei Song , Cheng Liu , Shuyan Wu , Haolin Li , Huiqin Guo , Biao Yang , Shi Qiu , Jianwu Li , Lan Liu , Haijuan Zeng , Xuzhao Zhai , Qing Liu

Publication date: January 2016
, Volume 59
Author(s): Min-Jeong Kim , Marta Mikš-Krajnik , Amit Kumar , Hyun-Gyun Yuk

Publication date: Available online 2 July 2015

Author(s): Renhui Huang , Xueying Tao , Cuixiang Wan , Shengjie Li , Hengyi Xu , Feng Xu , Nagendra P. Shah , Hua Wei

Street vended foods are the vehicle of pathogens transmission resulting in foodborne diseases. The purpose of this paper is to propose a conceptual public health risks framework of consuming road vended foods based on detailed review of existing literature in developing countries.

Aims
The presence of viable but nonculturable (VBNC) bacterial pathogens which often fail to be detected by cultivation and can regain the cultivability if the living conditions improve were reported. The objective of this study is to determine the occurrence of VBNC Salmonella spp. and Shigella spp. in the biosolids during anaerobic digestion and its reactivation during the cake storage.

Few studies within the pathogenic field have used advanced imaging and analytical tools to quantitatively measure pathogenicity in vivo. In this work, we present a novel approach for the investigation of host–pathogen processes based on medium-throughput 3D fluorescence imaging. The guinea pig model for Shigella flexneri invasion of the colonic...

Publication date: July 2015
, Volume 98, Issue 7
Author(s): Xin Wang , Qinglong Wu , Kan Deng , Qiang Wei , Ping Hu , Jingjing He , Huan Liu , Yong Zheng , Hua Wei , Nagendra P. Shah , Tingtao Chen

Enteroaggregative and uropathogenic Escherichia coli, Shigella flexneri 2a, and the hybrid enteroaggregative/Shiga toxin–producing E. coli strain (O104:H4) are important pathogens responsible for intestinal and urinary tract infections, as well as sepsis and hemolytic uremic syndrome. They have in common the production of a serine protease called Pic. Several biological roles for Pic have been described, including protection of E. coli DH5α from complement-mediated killing.

Publication date: Available online 21 May 2015

Author(s): G.N. Na , S.A. Kim , O.C. Kwon , M.S. Rhee

We investigated an October 2014 outbreak of illness caused by Shigella sonnei in a daycare center in the Republic of Korea (South Korea). The outbreak strain was resistant to extended-spectrum cephalosporins and fluoroquinolones and was traced to a child who had traveled to Vietnam. Improved hygiene and infection control practices are needed for prevention of shigellosis.

Diarrhea due to enteric bacterial pathogens causes significant morbidity and mortality in the United States and worldwide. However, bacterial pathogens may be infrequently identified. Currently, culture and enzyme immunoassays (EIAs) are the primary methods used by clinical laboratories to detect enteric bacterial pathogens.

Autotransporters are a superfamily of virulence factors secreted by Gram negative bacteria. They are comprised of an N-terminal passenger domain that is translocated across the outer membrane, and a C-terminal domain that inserts into the outer membrane forming a β-barrel anchor. It is still poorly understood how the passenger is efficiently translocated in the absence of external energy inputs.

Sergio Sánchez, María Teresa Llorente, María Aurora Echeita, Silvia Herrera-León

Publication date: 2 February 2015
, Volume 194
Author(s): Mohamed K. Omer , Sigrun J. Hauge , Øyvin Østensvik , Birgitte Moen , Ole Alvseike , Ole-Johan Røtterud , Miguel Prieto , Sissel Dommersnes , Ole H. Nesteng , Truls Nesbakken