Results 61 to 70 of about 2,683 (130)

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

Yellow fever outbreak temporarily changes dispersal patterns in an endangered primate

Journal of Animal Ecology, Volume 95, Issue 6, Page 911-922, June 2026.
Golden lion tamarins had their annual adult survival strongly impacted by a yellow fever outbreak in 2017–2018. At the same time, they temporarily changed their dispersal patterns. Despite a 30% decline, the population has come back to levels higher than pre‐outbreak ones. Abstract Disease outbreaks can severely affect populations in the wild. However,
Aurore Ponchon, Rémi Choquet, Andreia F. Martins, Carlos Ruiz‐Miranda, Cécile H. Albert, Valeria Romano   +5 more
wiley   +1 more source

Human ehrlichioses in Brazil: first suspect cases

Brazilian Journal of Infectious Diseases
Brazilian spotted fever (BSF) rickettsiosis is the most common and recognized of the human rickettsioses in Brazil. It is difficult to establish the diagnosis of human rickettsiosis infection by routine microbiologic methods, creating a false idea that ...
Simone B. Calic, Márcio A.M. Galvão, Fátima Bacellar, Christiane M. B. M. Rocha, Cláudio L. Mafra, Romário C. Leite, David H. Walker   +6 more
doaj   +1 more source

Rickettsia felis in Ctenocephalides spp. Fleas, Brazil

Emerging Infectious Diseases, 2002
In June 2000, suspected cases of Brazilian spotted fever (BSF) occurred in Coronel Fabriciano Municipality, Minas Gerais State, Brazil. Pooled fleas collected near two fatal cases contained rickettsial DNA. The nucleotide sequence alignment of the 391-bp
Riva P. Oliveira, Márcio A.M. Galvão, Claudio L. Mafra, Chequer B. Chamone, Simone B. Calic, Sergio U. Silva, David H. Walker   +6 more
doaj   +1 more source

When conservation meets contagion: Mapping yellow fever risk to guide vaccination in an endangered primate

Journal of Applied Ecology, Volume 63, Issue 6, June 2026.
Spatial projections revealed high‐risk areas for YF transmission, highlighting priority zones for targeted vaccination efforts in GLTs. By integrating disease ecology into conservation planning, this study offers a scalable framework for spatially informed interventions aimed at mitigating disease‐driven declines in threatened species.
Maxime Pierron, Aurore Ponchon, Carlos R. Ruiz‐Miranda, Andreia Martins, Cédric Sueur, Valéria Romano   +5 more
wiley   +1 more source

Brazilian spotted fever: description of a fatal clinical case in the State of Rio de Janeiro

Revista da Sociedade Brasileira de Medicina Tropical, 2002
We describe a case of Brazilian spotted fever in a previously healthy young woman who died with petechial rash associated to acute renal and respiratory insufficiency 12 days following fever, headache, myalgia, and diarrhea.
Elba Regina Sampaio de Lemos, Tatiana Rozental, Cid Leite Villela   +2 more
doaj  

Brazilian spotted fever in dogs/
Febre maculosa brasileira em cães

Semina: Ciências Agrárias, 2011
Brazilian spotted fever (BSF) is caused by bacteria Rickettsia rickettsii, highly pathogenic for humans and dogs, and has the Amblyomma cajennense tick as its main vector.
Alexander Welker Biondo, Leonardo Hermes Dutra, Fernanda Silva Fortes, Marcelo Beltrão Molento   +3 more
doaj   +1 more source

Integrative Genomics Identifies Candidate Genes Underlying Trypanotolerance in Hybrid African Cattle

Evolutionary Applications, Volume 19, Issue 6, June 2026.
ABSTRACT Integrative genomics combines data from different omics sources to link genotypes and phenotypes with the aim of unravelling biological networks and pathways that undergird complex traits, particularly with respect to disease. In this respect, integrative genomics, leveraging population and functional genomic data, can be employed to ...
Gillian P. McHugo, James A. Ward, Said Ismael Ng'ang'a, Laurent A. F. Frantz, John A. Browne, Michael Salter‐Townshend, Grace M. O'Gorman, Kieran G. Meade, Emmeline W. Hill, Thomas J. Hall, David E. MacHugh   +10 more
wiley   +1 more source

Experimental infection of dogs with a Brazilian strain of Rickettsia rickettsii: clinical and laboratory findings

Memorias do Instituto Oswaldo Cruz, 2008
The bacterium Rickettsia rickettsii is the etiological agent of an acute, severe disease called Rocky Mountain spotted fever in the United States or Brazilian spotted fever (BSF) in Brazil.
Eliane M Piranda, João Luis H Faccini, Adriano Pinter, Tais B Saito, Richard C Pacheco, Mitika K Hagiwara, Marcelo B Labruna   +6 more
doaj   +1 more source

Socioeconomic Account of Reading Abilities in Learning Chinese as a First Language and English as a Second Language

Language Learning, Volume 76, Issue 2, Page 425-453, June 2026.
Abstract The study examined the mediation model of socioeconomic status (SES) and executive function (EF) on reading abilities in Chinese (as first language, L1) and English (as second language, L2) in 260 native Cantonese‐speaking students (146 boys) from Hong Kong local primary schools with the mean age at 111.3 months (range = 98–132 months).
Dan Lin, Jinghan Liang, Xiuhong Tong, Susanna Siu‐Sze Yeung, Phil Duo Liu, Him Cheung   +5 more
wiley   +1 more source