Results 51 to 60 of about 12,137 (236)

Genetic characterization of a novel Ehrlichia chaffeensis genotype from an Amblyomma tenellum tick from South Texas, USA. [PDF]

Ticks Tick Borne Dis, 2022
Arroyave E, Quade B, Mendell NL, Blanton LS, Bouyer DH.   +4 more
europepmc   +2 more sources

Experimental Ehrlichia chaffeensis infection in beagles [PDF]

Journal of Medical Microbiology, 2003
A canine model for human monocytic ehrlichiosis was used to assess persistent infection and antigenic variation of Ehrlichia chaffeensis. Two beagle dogs were infected subcutaneously with E. chaffeensis Arkansas strain. The dogs were observed for 6 months after inoculation for clinical signs, blood chemistry changes, antibodies to E.
Xiaofeng Zhang, Jian-zhi Zhang, S. Wesley Long, Randall P. Ruble, Xue‐jie Yu   +4 more
openalex   +4 more sources

Prevalence of Ehrlichia spp. in dogs and ticks in Hainan Province, China [PDF]

BMC Veterinary Research
Background Ehrlichia spp. are a group of intracellular parasitic bacteria primarily transmitted by ticks. They exhibit a wide global distribution and can infect a diverse range of mammals, including humans, underscoring their immense public health ...
Haiyue Zu, Zhilong Xiang, Xiaoming Zhang, Qiyuan Cao, Yang Lin, Zhu Ying, Biswajit Bhowmick, Hengtao Xiang, Qian Han, Jinhua Wang   +9 more
doaj   +2 more sources

Natural Infection of Domestic Goats with Ehrlichia chaffeensis [PDF]

Journal of Clinical Microbiology, 2000
ABSTRACTThirty-eight domestic goats from an area ofEhrlichia chaffeensisendemicity were tested for antibodies reactive toE. chaffeensisand forE. chaffeensis-specific 16S rRNA gene fragments by an indirect fluorescent antibody test and a nested PCR assay, respectively. Twenty-eight of 38 (73.7%) goats had antibodies reactive toE.
Vivien G. Dugan, Susan E. Little, David E. Stallknecht, Ashley D. Beall   +3 more
openalex   +5 more sources

Reinfection withEhrlichia chaffeensisin a Liver Transplant Recipient [PDF]

Clinical Infectious Diseases, 2002
Human monocytic ehrlichiosis is an emerging infection caused by Ehrlichia chaffeensis, but reinfection with this agent has not been described. We report a case of reinfection with E. chaffeensis after a 2-year interval in a 56-year-old liver transplant recipient with frequent tick attachments.
Allison M. Liddell, John W. Sumner, Christopher D. Paddock, Yasuko Rikihisa, Ahmet Ünver, Richard S. Buller, Gregory A. Storch   +6 more
openalex   +4 more sources

Glycosylation of Homologous Immunodominant Proteins of Ehrlichia chaffeensis and Ehrlichia canis [PDF]

Infection and Immunity, 2000
ABSTRACT The glycoprotein genes of Ehrlichia chaffeensis (1,644 bp) and Ehrlichia canis (2,064 bp) encode proteins of 548 to 688 amino acids with predicted molecular masses of only 61 and 73 kDa but with electrophoretic mobilities of 120 kDa (P120) and 140 kDa (P140), respectively ...
Jere W. McBride, Xue‐jie Yu, David H. Walker   +2 more
openalex   +4 more sources

Comparative Analysis of Genome of Ehrlichia sp. HF, a Model Bacterium to Study Fatal Human Ehrlichiosis

BMC Genomics, 2021
Background The genus Ehrlichia consists of tick-borne obligatory intracellular bacteria that can cause deadly diseases of medical and agricultural importance. Ehrlichia sp. HF, isolated from Ixodes ovatus ticks in Japan [also referred to as I.
Mingqun Lin, Qingming Xiong, Matthew Chung, Sean C. Daugherty, Sushma Nagaraj, Naomi Sengamalay, Sandra Ott, Al Godinez, Luke J. Tallon, Lisa Sadzewicz, Claire Fraser, Julie C. Dunning Hotopp, Yasuko Rikihisa   +12 more
doaj   +1 more source

Infections withEhrlichia chaffeensisandEhrlichia ewingiiin Persons Coinfected with Human Immunodeficiency Virus [PDF]

Clinical Infectious Diseases, 2001
The clinical course and laboratory evaluation of 21 patients coinfected with human immunodeficiency virus (HIV) and Ehrlichia chaffeensis or Ehrlichia ewingii are reviewed and summarized, including 13 cases of ehrlichiosis caused by E. chaffeensis, 4 caused by E. ewingii, and 4 caused by either E. chaffeensis or E. ewingii.
Christopher D. Paddock, Scott M. Folk, G. Merrill Shore, Linda J. Machado, Mark M. Huycke, Leonard N. Slater, Allison M. Liddell, Richard S. Buller, Gregory A. Storch, Thomas P. Monson, David Rimland, John W. Sumner, Joseph Singleton, Karen C. Bloch, Yi‐Wei Tang, Steven M. Standaert, James E. Childs   +16 more
openalex   +4 more sources

Ultrastructural variation of cultured Ehrlichia chaffeensis [PDF]

Journal of Medical Microbiology, 1995
The ultrastructure of Ehrlichia chaffeensis (Arkansas strain) was studied in non-irradiated and irradiated monolayers of mouse embryo, Vero, BGM and L929 cells, and in non-irradiated DH82 cells. Within the intracellular parasitophorous vacuoles (morulae), two types of ehrlichial cells were found regularly--those with uniformly dispersed nucleoid ...
David H. Walker, Vsevolod L. Popov, Sheng-Min Chen, Hui-Min Feng   +3 more
openaire   +3 more sources

Seroprevalence of Ehrlichia canis, Ehrlichia chaffeensis and Ehrlichia ewingii in dogs in North America [PDF]

Parasites & Vectors, 2012
This study evaluated the exposure of dogs to three different Ehrlichia spp. in the south and central regions of the United States where vector-borne disease prevalence has been previously difficult to ascertain, particularly beyond the metropolitan areas.Dog blood samples (n = 8,662) were submitted from 14 veterinary colleges, 6 private veterinary ...
Cristina Iazbik, C. Guillermo Couto, Wendy Wolfson, Patty Lathan, Susan E. Little, Lynn C Guptill, Leah A. Cohn, A. Rick Alleman, Melissa J. Beall, Alma Roy, Stephen A. Kania, Brett A. Stillman, Elizabeth G. Welles, Katherine A. Sayler, Michael W. Dryden, Michael J. Yabsley, Edward B. Breitschwerdt   +16 more
openaire   +4 more sources