Results 51 to 60 of about 5,340 (173)

Eco‐Epidemiological Study of Seropositivity Against Rickettsia and Leptospira Agents in Rural Areas of Urabá, Colombia

Tropical Medicine &International Health, EarlyView.
ABSTRACT Introduction Rickettsioses and leptospirosis are infectious diseases often underdiagnosed due to limited knowledge about their epidemiology, pathophysiology, and clinical aspects. Objectives To characterize the seroprevalence and seroincidence of Rickettsia and Leptospira agents and determine their associated factors in rural areas of Urabá ...
Mariana Torres‐Bustamante, Omar Cantillo‐Barraza, Albert I. Ko, Elsio A. Wunder Jr, Juan C. Quintero‐Vélez   +4 more
wiley   +1 more source

Reactivity of monoclonal antibodies to Rickettsia rickettsii with spotted fever and typhus group rickettsiae [PDF]

Journal of Clinical Microbiology, 1987
Analysis of 15 spotted fever group (SFG) and 2 typhus group strains of rickettsiae with a panel of monoclonal antibodies revealed a number of shared and unique epitopes of the 120- and 155-kilodalton surface proteins. All of the SFG strains but neither of the typhus group strains reacted with antibody to the lipopolysaccharidelike antigen of Rickettsia
R L, Anacker, R E, Mann, C, Gonzales
openaire   +2 more sources

Cellular immune response of Amblyomma sculptum and Amblyomma americanum to entomopathogenic fungi: Implications for biological tick control

Medical and Veterinary Entomology, Volume 40, Issue 3, Page 582-594, September 2026.
Amblyomma sculptum showed a plasmatocyte‐dominant haemocyte profile. Beauveria bassiana increased plasmatocytes and reduced granulocytes, whereas Metarhizium robertsii did not cause significant changes. Amblyomma americanum showed a granulocyte‐dominant haemocyte profile. Beauveria bassiana reduced total haemocytes and granulocytes. B.
Cárita de Souza Ribeiro‐Silva, Valesca Henrique Lima, Salorrane Miranda N. Pinto, Gustavo Felizardo S. Sandes, Victor Hugo Ribeiro Costa, Albert Mulenga, Adela S. Oliva Chavez, Éverton Kort Kamp Fernandes   +7 more
wiley   +1 more source

Flinders Island Spotted Fever Rickettsioses Caused by “marmionii” Strain of Rickettsia honei, Eastern Australia

Emerging Infectious Diseases, 2007
Australia has 4 rickettsial diseases: murine typhus, Queensland tick typhus, Flinders Island spotted fever, and scrub typhus. We describe 7 cases of a rickettsiosis, with an acute onset and symptoms of fever (100%), headache (71%), arthralgia (43 ...
Nathan B. Unsworth, John Stenos, Stephen R. Graves, Antony G. Faa, G. Erika Cox, John R. Dyer, Craig S. Boutlis, Amanda M. Lane, Matthew D. Shaw, Jennifer Robson, Michael D. Nissen   +10 more
doaj   +1 more source

Spotted Fever Group Rickettsia sp. Closely Related to Rickettsia japonica, Thailand [PDF]

Emerging Infectious Diseases, 2009
Suggested citation for this article: Takada N, Fujita H, Kawabata H, Ando S, Sakata A, Takano A, et al. Spotted fever group Rickettsia sp. closely related to R. japonica, Thailand [letter]. Emerg Infect Dis [serial on the Internet]. 2009 Apr [date cited].
Nobuhiro, Takada, Hiromi, Fujita, Hiroki, Kawabata, Shuji, Ando, Akiko, Sakata, Ai, Takano, Udom, Chaithong   +6 more
openaire   +2 more sources

Host, vector, and parasite dynamics: exploring intrinsic and extrinsic factors shaping tick‐borne filarial nematode transmission

Biological Reviews, Volume 101, Issue 4, Page 1779-1792, August 2026.
ABSTRACT Tick‐borne filarial nematodes are a complex and understudied group of parasites that rely on ticks for transmission in vertebrates. This review examines how intrinsic and extrinsic factors may influence the successful transmission of filarial nematodes in tick vectors, drawing insights from extensively studied haematophagous dipteran vector ...
Oluwaseun D. Ajileye, Gabriel L. Hamer, Sarah A. Hamer, Guilherme G. Verocai, Jessica E. Light   +4 more
wiley   +1 more source

Vectors and Vector‐Borne Diseases: Biology, Epidemiology and Integrated Control Strategies

Journal of Applied Entomology, Volume 150, Issue 7, Page 990-1015, August 2026.
ABSTRACT Vector‐Borne Diseases (VBDs), transmitted by arthropods such as mosquitoes, ticks, fleas and sandflies, represent a significant threat to global health. These diseases can be caused by a variety of pathogens, including bacteria, viruses, protozoa, and helminths.
Roberta Rinaldi, Carmen Scieuzo, Federica De Stefano, Luca Masucci, Patrizia Falabella   +4 more
wiley   +1 more source

Rickettsia sibirica mongolitimonae infection, Sri Lanka

Journal of Infection in Developing Countries, 2017
Introduction. Rickettsia sibirica mongolitimonae was recently reported as a common rickettsiosis in France. Current serological evidence suggests the presence of scrub typhus and spotted fever group rickettsiosis in Sri Lanka.
Charlotte Cordier, Pierre Tattevin, Caroline Leyer, Marine Cailleaux, Didier Raoult, Emmanouil Angelakis   +5 more
doaj   +1 more source

Ticks and tick-borne rickettsiae from dogs in El Salvador, with report of the human pathogen Rickettsia parkeri

Ticks and Tick-Borne Diseases, 2023
Twelve tick species have been reported in El Salvador; however, information regarding ticks infesting domestic dogs is lacking, and pathogenic tick-borne Rickettsia species have never been reported in El Salvador.
Luis E. Romero, Lina C. Binder, Arlei Marcili, Marcelo B. Labruna   +3 more
doaj   +1 more source

First report of spotted fever group Rickettsia in Cuba

Ticks and Tick-borne Diseases, 2016
Rickettsia amblyommii has been commonly detected in ticks worldwide and several reports suggest that this bacterium could be a human pathogen. In this study, 356 Amblyomma mixtum adults and 66 Amblyomma sp. nymphs were collected from a Cuban rural community and screened with Rickettsia -specific PCR primers followed by amplicon sequencing ...
Noda, Angel A., Rodríguez, Islay, Miranda, Jorge, Mattar, Salim, Cabezas-Cruz, Alejandro   +4 more
openaire   +3 more sources