Results 41 to 50 of about 1,338 (118)

Caso autóctono de fiebre manchada por Rickettsia parkeri en el Valle de Calamuchita, Córdoba

Actualizaciones en Sida e Infectología
Las Fiebres Manchadas (FM) son zoonosis causadas por bacterias del género Rickettsia spp. y transmitidas por garrapatas. En la Cuenca hidrográfica del Plata, sobre humedales y márgenes de ríos y arroyos, las garrapatas Amblyomma triste y Amblyomma ...
Lucía Guadalupe Guzmán, Dario Conrado Quinodoz   +1 more
doaj   +1 more source

Can landscape management provide disease regulation services? A case study of Brazilian spotted fever incidence

Journal of Applied Ecology, Volume 63, Issue 10, October 2026.
Policy implications. Our results can help prioritize surveillance strategies and the implementation of preventive measures, particularly in areas where landscape structures cannot provide disease regulation services. Landscape management actions aimed at increasing the amount of forest areas in a more aggregated manner could help restore those ...
Nicolas Conserva, Paula Ribeiro Prist, Gabriela Farias Asmus, Niko Speybroeck, Leandro Reverberi‐Tambosi   +4 more
wiley   +1 more source

Molecular Detection and Genetic Identification of Rickettsia Infection in Ixodes granulatus Ticks, an Incriminated Vector for Geographical Transmission in Taiwan

Microorganisms, 2021
Tick-borne Rickettsia pathogens have become an emerging source of zoonotic infections and have a major impact on human health worldwide. In this study, the prevalence and genetic identity of Rickettsia infections in Ixodes granulatus ticks was firstly ...
Chien-Ming Shih, Pei-Wen Yang, Li-Lian Chao   +2 more
doaj   +1 more source

Rickettsiales in South America: A Systematic Review of Their Molecular Detection and Distribution in Arthropods and Vertebrates

Public Health Challenges, Volume 5, Issue 2, June 2026.
ABSTRACT Bacteria of the order Rickettsiales comprise a diverse group of obligate intracellular microorganisms that are globally distributed and highly prevalent in tropical and subtropical regions. In South America, these bacteria have been associated with arthropod vectors, such as ticks, fleas, mites, lice, and certain dipterans, as well as with a ...
Cristian J. Zamorano‐Gómez, Paula A. Ossa‐López, Estefani T. Martínez‐Sánchez, Fredy A. Rivera‐Paéz   +3 more
wiley   +1 more source

Early Tick Species Identification Using Eschar‐Based PCR to Guide Presymptomatic Risk Assessment in Tick‐Borne Diseases

Clinical Case Reports, Volume 14, Issue 4, April 2026.
ABSTRACT In endemic regions where simultaneous larval tick bites frequently occur, early identification of tick species from eschar lesions may substantially influence presymptomatic clinical triage. We report a 78‐year‐old woman who was found after approximately 24 h of wandering, presenting with multiple clustered eschars on the lower extremities and
Makoto Kondo, Koji Habe, Keiichi Yamanaka   +2 more
wiley   +1 more source

Ecological dynamics of blacklegged ticks, vertebrate hosts, and associated zoonotic pathogens in northeastern forests

Ecosphere, Volume 16, Issue 12, December 2025.
Abstract Specific host‐tick interactions in temperate forest systems influence variation in density and infection prevalence of nymphal blacklegged tick (Ixodes scapularis). The density of infected nymphs (DIN), which is the product of nymphal infection prevalence (NIP) and density of questing nymphs (DON), influences the risk of human exposure to tick‐
Shannon L. LaDeau, Kelly Oggenfuss, Alexander Schmidt, Saravanan Thangamani, Richard S. Ostfeld   +4 more
wiley   +1 more source

Rickettsia parkeri in Brazil

Emerging Infectious Diseases, 2007
We report finding Rickettsia parkeri in Brazil in 9.7% of Amblyomma triste ticks examined. An R. parkeri isolate was successfully established in Vero cell culture. Molecular characterization of the agent was performed by DNA sequencing of portions of the
Iara Silveira, Richard C. Pacheco, Matias P. J. Szabó, Hernani G. C. Ramos, Marcelo B. Labruna   +4 more
doaj   +1 more source

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

Exploring the diversity of Rickettsia in carnivores of the Brazilian cerrado: An analysis of the relationship with ticks

Ticks and Tick-Borne Diseases
The proximity of wildlife reserve areas to anthropized regions facilitates the spread and exchange of infectious agents, including pathogens with zoonotic potential, thereby increasing health-related risks for species already threatened with extinction ...
Ana Paula Nunes de Quadros, George Magno Sousa do Rego, Lina de Campos Binder, Thiago Fernandes Martins, Igor Silva Silito, Ane Beatriz Escouto Teixeira, Jessica Cabral Carvalho, Wericles Ribeiro dos Santos, Marisa Vieira Carvalho, Ana Raquel Gomes Faria, Filipe Ferreira Pedroso, Paulo Sérgio Ribeiro de Mattos, Márcio Botelho de Castro, Marcelo B. Labruna, Giane Regina Paludo   +14 more
doaj   +1 more source

High‐Throughput Pipeline for Protein Expression and Solubility Profiling Using Synthetically Generated Plasmids

Current Protocols, Volume 5, Issue 7, July 2025.
Abstract High‐throughput protein expression and purification can now take advantage of the copious expansion of genes from extensive genomics and metagenomic surveillance programs. This article outlines a pipeline that involves strategic selection of a large repertoire of protein targets for cloning by commercial synthetic services, followed by high ...
Supratim Dey, Saurabh Gireesan, Theodora Solovou, Nicole L. Inniss, Karla J. F. Satchell   +4 more
wiley   +1 more source