Results 131 to 140 of about 74,303 (276)

Automated identification of spotted‐fever tick vectors using convolutional neural networks

Medical and Veterinary Entomology, Volume 39, Issue 4, Page 829-841, December 2025.
We evaluate the performance of convolutional neural networks (CNN) AlexNet, ResNet‐50 and MobileNetV2 for the automated identification of tick species capable of transmitting spotted fever. CNNs achieved accuracy rates of ~90% in identifying ticks and showed sensitivities of 59%–100% according to species, sex, position or image resolution.
Isadora R. C. Gomes, Vinícius L. Miranda, José Fabrício C. Leal, Igor P. Oliveira, Paula J. Silva, Karla Bitencourth, Claudio M. Rodrigues, Liege R. Siqueira, Marcelo B. Labruna, Gilberto S. Gazeta, Marinete Amorim, Rodrigo Gurgel‐Gonçalves   +11 more
wiley   +1 more source

Evidence for vertical transmission of Mycoplasma haemocanis, but not Ehrlichia ewingii, in a dog

Journal of Veterinary Internal Medicine, 2019
A 2‐year‐old female intact pregnant Beagle was evaluated after the owner surrendered her to a shelter. Prepartum and 2 months postpartum at the time of routine spay, the dam was whole‐blood polymerase chain reaction (PCR) positive for Ehrlichia ewingii ...
Erin Lashnits, Sandra Grant, Brittany Thomas, Barbara Qurollo, Edward B. Breitschwerdt   +4 more
doaj   +1 more source

tRNA signatures reveal polyphyletic origins of streamlined SAR11 genomes among the alphaproteobacteria [PDF]

, 2013
Phylogenomic analyses are subject to bias from compositional convergence and noise from horizontal gene transfer (HGT). Compositional convergence is a likely cause of controversy regarding phylogeny of the SAR11 group of Alphaproteobacteria that have ...
Amrine, Katherine C. H., Ardell, David H., Swingley, Wesley D.   +2 more
core   +4 more sources

Rickettsia parkeri and Candidatus Rickettsia andeanae in Tick of the Amblyomma maculatum Group, Mexico

Emerging Infectious Diseases, 2019
We report Rickettsia parkeri and Candidatus Rickettsia andeanae in ticks of the Amblyomma maculatum group collected from dogs in Sonora, Mexico. Molecular characterization of these bacteria was accomplished by DNA amplification and sequence analysis of ...
J. Delgado-de la Mora, S. Sánchez-Montes, J. D. Licona-Enríquez, David Delgado-de la Mora, C. Paddock, L. Beati, P. Colunga-Salas, C. Guzmán-Cornejo, Maria L. Zambrano, Sandor E. Karpathy, A. López-Pérez, G. Álvarez-Hernández   +11 more
semanticscholar   +1 more source

Allopurinol‐Induced Lymphadenopathy: A Case Report

ACR Open Rheumatology, Volume 7, Issue 12, December 2025.
Mikako Harata, Aparna Das
wiley   +1 more source

Canine Spotted Fever Group Rickettsial Seroprevalence as an Indicator for Human Rocky Mountain Spotted Fever Case Rates in Arizona, USA

Zoonoses and Public Health, Volume 72, Issue 8, Page 697-705, December 2025.
ABSTRACT Introduction Rocky Mountain spotted fever (RMSF), a rapidly progressing febrile disease caused by the bacterium Rickettsia rickettsii, is the deadliest tick‐borne disease in the world. Human infection initially results in non‐specific symptoms and, if untreated, can result in death in up to 35% of cases.
Alec Oliva, Rachael Kreisler, Andrea Romkema, Soren Madsen, Haley Furman, Christopher Maag, Charles Schaefer, Jose A. Hernandez, Jung Keun Lee, Michael Quinlan, John VandenBrooks   +10 more
wiley   +1 more source

Genotypic Characterization of Rickettsia bellii Reveals Distinct Lineages in the United States and South America

BioMed Research International, 2018
The bacterium Rickettsia bellii belongs to a basal group of rickettsiae that diverged prior to the pathogenic spotted fever group and typhus group Rickettsia species. Despite a diverse representation of R.
F. Krawczak, M. Labruna, Joy A. Hecht, C. Paddock, Sandor E. Karpathy   +4 more
semanticscholar   +1 more source

A eubacterial origin for the human tRNA nucleotidyltransferase? [PDF]

, 2001
tRNA CCA-termini are generated and maintained by tRNA nucleotidyltransferases. Together with poly(A) polymerases and other enzymes they belong to the nucleotidyltransferase superfamily.
Aebi M., Altschul S.F., Chen J.Y., Cudny H., Deutscher M.P., Deutscher M.P., Deutscher M.P., Deutscher M.P., Martin G., Raynal L.C., Saitou N., Yue D., Zhu L.   +12 more
core   +1 more source

Combined infection with Tomato yellow leaf curl virus and Rickettsia influences fecundity, attraction to infected plants and expression of immunity-related genes in the whitefly Bemisia tabaci.

Journal of General Virology, 2019
We have recently shown that Rickettsia, a secondary facultative bacterial symbiont that infects the whitefly B. tabaci is implicated in the transmission of Tomato yellow leaf curl virus (TYLCV).
Adi Kliot, S. Kontsedalov, G. Lebedev, H. Czosnek, M. Ghanim   +4 more
semanticscholar   +1 more source

Rickettsias del grupo de las fiebres manchadas en garrapatas del género Amblyomma, capaces de infestar humanos, en áreas rurales del noroeste de Argentina [PDF]

, 2015
This work was performed to detect Rickettsia species of the spotted fever group in Amblyomma ticks likely to infest humans in rural areas from northwestern Argentina.
Nava, Santiago, Saracho Bottero, María Noelia, Tarragona, Evelina Luisa   +2 more
core