James E. Keen
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
James E. Keen has a total of 5 co-authors. Here are the top co-authors by number of shared publications:
Lisa M. Durso
USDA, ARS, U.S. Meat Animal Research Center, Clay Center, Nebraska,1 Brookfield Zoo, Chicago Zoological Society, Brookfield, Illinois2
3 shared publicationsJames L. Bono
United States Department of Agriculture, Clay Center, Nebraska, USA
2 shared publicationsJohn R. Dunn
Louisiana State University, Baton Rouge, Louisiana, USA
1 shared publicationThomas E. Wittum
Ohio State University, Columbus, Ohio, USA
1 shared publicationThomas P. Meehan
USDA, ARS, U.S. Meat Animal Research Center, Clay Center, Nebraska,1 Brookfield Zoo, Chicago Zoological Society, Brookfield, Illinois2
1 shared publication
Latest Publications
- 1 January 2007
- Published by American Society for Microbiology in Applied and Environmental Microbiology
- Vol. 73 (1) , 362-365
Isolation of Salmonella enterica and Shiga-Toxigenic Escherichia coli O157 from Feces of Animals in Public Contact Areas of United States Zoological Parks
The fecal prevalence of subclinical Salmonella enterica and Shiga-toxigenic Escherichia coli O157 among animals in human-animal contact exhibits at institutions in the United States accredited by the Association of Zoos and Aquariums was estimated to assess public health risk. The prevalence was less than 0.6% for both zoonotic pathogens among 997 animals sampled at 36 exhibits.
- 1 January 2007
- Published by American Society for Microbiology in Applied and Environmental Microbiology
- Vol. 73 (1) , 362-365
Isolation of Salmonella enterica and Shiga-Toxigenic Escherichia coli O157 from Feces of Animals in Public Contact Areas of United States Zoological Parks
The fecal prevalence of subclinical Salmonella enterica and Shiga-toxigenic Escherichia coli O157 among animals in human-animal contact exhibits at institutions in the United States accredited by the Association of Zoos and Aquariums was estimated to assess public health risk. The prevalence was less than 0.6% for both zoonotic pathogens among 997 animals sampled at 36 exhibits.
- Open Access
- 1 May 2006
- Published by Centers for Disease Control and Prevention (CDC) in Emerging Infectious Diseases
- Vol. 12 (5) , 780-786
Shiga-toxigenicEscherichia coliO157 in Agricultural Fair Livestock, United States
Agricultural fairs exhibiting livestock are increasingly implicated in human Shiga-toxigenic Escherichia coli O157:H7 (STEC O157:H7) outbreaks. To estimate livestock STEC O157:H7 prevalence at US fairs, we collected 2,919 fecal specimens at 29 county fairs in 2 states and at 3 state fairs in 2002. Fly pools were also collected. STEC O157:H7 was isolated from livestock at 31 (96.9%) of 32 fairs, including 11.4% of 1,407 cattle, 1.2% of 1,102 swine, 3.6% of 364 sheep and goats, and 5.2% of 154 fly pools. Cattle, swine, and flies at some fairs shared indistinguishable STEC O157:H7 isolate subtypes. In 2003, a total of 689 ambient environmental samples were collected at 20 fairgrounds 10–11 months after 2002 livestock sampling while fairgrounds were livestock-free. Four beef barn environmental samples at 3 fairgrounds yielded STEC O157:H7. These data suggest that STEC O157 is common and transmissible among livestock displayed at agricultural fairs and persists in the environment after the fair.
- 1 May 2006
- Published by Centers for Disease Control and Prevention (CDC) in Emerging Infectious Diseases
- Vol. 12 (5) , 780-786
Open AccessShiga-toxigenicEscherichia coliO157 in Agricultural Fair Livestock, United States
Agricultural fairs exhibiting livestock are increasingly implicated in human Shiga-toxigenic Escherichia coli O157:H7 (STEC O157:H7) outbreaks. To estimate livestock STEC O157:H7 prevalence at US fairs, we collected 2,919 fecal specimens at 29 county fairs in 2 states and at 3 state fairs in 2002. Fly pools were also collected. STEC O157:H7 was isolated from livestock at 31 (96.9%) of 32 fairs, including 11.4% of 1,407 cattle, 1.2% of 1,102 swine, 3.6% of 364 sheep and goats, and 5.2% of 154 fly pools. Cattle, swine, and flies at some fairs shared indistinguishable STEC O157:H7 isolate subtypes. In 2003, a total of 689 ambient environmental samples were collected at 20 fairgrounds 10–11 months after 2002 livestock sampling while fairgrounds were livestock-free. Four beef barn environmental samples at 3 fairgrounds yielded STEC O157:H7. These data suggest that STEC O157 is common and transmissible among livestock displayed at agricultural fairs and persists in the environment after the fair.
- 1 August 2005
- Published by American Society for Microbiology in Applied and Environmental Microbiology
- Vol. 71 (8) , 4941-4944
Molecular Serotyping ofEscherichia coliO26:H11
Serotyping is the foundation of pathogenicEscherichia colidiagnostics; however, few laboratories have this capacity. We developed a molecular serotyping protocol that targets, genetically, the same somatic and flagellar antigens ofE. coliO26:H11 used in traditional serotyping. It correctly serotypes strains untypeable by traditional methods, affording primary laboratories serotyping capabilities.
- 1 August 2005
- Published by American Society for Microbiology in Applied and Environmental Microbiology
- Vol. 71 (8) , 4941-4944
Molecular Serotyping ofEscherichia coliO26:H11
Serotyping is the foundation of pathogenicEscherichia colidiagnostics; however, few laboratories have this capacity. We developed a molecular serotyping protocol that targets, genetically, the same somatic and flagellar antigens ofE. coliO26:H11 used in traditional serotyping. It correctly serotypes strains untypeable by traditional methods, affording primary laboratories serotyping capabilities.