Results 71 to 80 of about 12,467 (198)

Acquisitions nouvelles dans la connaissance d'Haematoxenus separatus (Sporozoa, Theileriidae) du mouton en Tanzanie

Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux, 1976
L'évolution des rechutes d'Haematoxenus separatus, après splénectomie de deux moutons porteurs de parasites, est décrite. Le parasite a été trouvé pour la première fois chez un mouton non splénectomisé.
Gerrit Uilenberg, B.E.C. Schreuder
doaj   +1 more source

Molecular detection of Coxiella burnetii in ticks collected from animals and the environment in Uganda

Zoonoses and Public Health, Volume 71, Issue 8, Page 869-875, December 2024.
Abstract Aims Coxiella burnetii is a highly infectious organism that is easily spread through aerosols causing Q fever in humans. Ticks can harbour and transmit C. burnetii to animals, contributing to disease maintenance. Our aim was to examine the presence of C. burnetii in ticks in Uganda.
Wilfred Eneku, Bernard Erima, Anatoli Maranda Byaruhanga, Nora Cleary, Gladys Atim, Titus Tugume, Qouilazoni Aquino Ukuli, Hannah Kibuuka, Edison Mworozi, Robert Tweyongyere, Christina E. Douglas, Jeffrey W. Koehler, Michael E. von Fricken, Fred Wabwire‐Mangen, Denis K. Byarugaba   +14 more
wiley   +1 more source

Vector abundance and associated abiotic factors that influence the distribution of ticks in six provinces of South Africa [PDF]

Veterinary World
Background and Aim: Climatic conditions significantly impact the life stages and distribution patterns of ticks and tick-borne diseases. South Africa’s central plateau and various biomes offer a distinct landscape for studying the geography’s effects ...
Tsireledzo G. Makwarela, Appolinaire Djikeng, Tracy M. Masebe, Nyangiwe Nkululeko, Lucky T. Nesengani, Ntanganedzeni O. Mapholi   +5 more
doaj   +1 more source

Acquisition and transmission of Theileria parva by vector tick, Rhipicephalus appendiculatus [PDF]

Acta Tropica, 2006
In order to investigate the transmission dynamics of Theileria parva (T. parva) by the brown ear tick, Rhipicephalus appendiculatus (R. appendiculatus), under experimental conditions, detection of T. parva in ticks and cattle was performed by a quantitative real-time PCR assay. A calf inoculated with a T. parva mixture became PCR-positive for T.
Konnai, Satoru, Imamura, Saiki, Nakajima, Chie, Witola, William Harold, Yamada, Shinji, Simuunza, Martin, Nambota, Andrew, Yasuda, Jun, Ohashi, Kazuhiko, Onuma, Misao   +9 more
openaire   +4 more sources

Farmer‐friendly delivery of veterinary services: Experimental insights from the Kenyan dairy sector

Journal of Agricultural Economics, Volume 75, Issue 3, Page 829-846, September 2024.
Abstract Poor health conditions of livestock cause sizeable losses for many farmers in the Global South. Veterinary services, including vaccinations, could help but often fail to reach farmers under typical smallholder conditions. Here, we examine how the provision of a vaccine against East Coast Fever (ECF)—a tick‐borne disease affecting cattle in ...
Kevin W. Maina, Martin C. Parlasca, Elizaphan J. O. Rao, Matin Qaim   +3 more
wiley   +1 more source

Coxiella burnetii serostatus in dromedary camels (Camelus dromedarius) is associated with the presence of C. burnetii DNA in attached ticks in Laikipia County, Kenya

Zoonoses and Public Health, Volume 71, Issue 5, Page 503-514, August 2024.
Abstract Aims Q fever is a globally distributed, neglected zoonotic disease of conservation and public health importance, caused by the bacterium Coxiella burnetii. Coxiella burnetii normally causes subclinical infections in livestock, but may also cause reproductive pathology and spontaneous abortions in artiodactyl species.
Tess Rooney, Eric M. Fèvre, Jandouwe Villinger, Maris Brenn‐White, Charles O. Cummings, Daniel Chai, Joseph Kamau, Alice Kiyong'a, Dennis Getange, Dickens O. Ochieng, Velma Kivali, Dawn Zimmerman, Marieke Rosenbaum, Felicia B. Nutter, Sharon L. Deem   +14 more
wiley   +1 more source

Immune functions of C‐type lectins in medical arthropods

Insect Science, Volume 31, Issue 3, Page 652-662, June 2024.
C‐type lectins (CTLs) in mosquito vectors facilitate viral infection. Mosquito CTLs (mosGCTLs) bind to the viral envelope (E) proteins of the West Nile virus (WNV) (A), the Japanese encephalitis virus (JEV) (B), and the dengue virus (DENV) (c), thus enhancing viral entry into cells via membrane receptors such as mosPTP‐1. Abstract C‐type lectins (CTLs)
Zhihao Ming, Zhiqiang Chen, Hao Tong, Xia Zhou, Tingting Feng, Jianfeng Dai   +5 more
wiley   +1 more source

Targeting Haemaphysalis longicornis serpin to prevent tick feeding and pathogen transmission

Insect Science, Volume 31, Issue 3, Page 694-706, June 2024.
Fed nymphal Haemaphysalis longicornis ticks produce anticoagulant serpins (Hlserpin‐a and Hlserpin‐b) that aid tick feeding. Targeting these serpins through RNA interference or immunization significantly impairs tick feeding. Silencing Hlserpins also reduces Langat virus transmission from ticks to mice.
Tingting Feng, Hao Tong, Qianqian Zhang, Zhihao Ming, Zhenyu Song, Xia Zhou, Jianfeng Dai   +6 more
wiley   +1 more source

Epidemiological uses of a population model for the tick Rhipicephalus appendiculatus [PDF]

Tropical Medicine & International Health, 1999
Summary The spatial and temporal risk of tick‐borne disease depends fundamentally on the distribution, abundance and seasonal dynamics of the vector ticks. The latter factor exerts a major quantitative influence on the transmission dynamics of tick‐borne parasites.
openaire   +2 more sources

Insights from entire mitochondrial genome sequences into the phylogeny of ticks of the genera Haemaphysalis and Archaeocroton with the elevation of the subgenus Alloceraea Schulze, 1919 back to the status of a genus

Medical and Veterinary Entomology, Volume 38, Issue 2, Page 189-204, June 2024.
We sequenced the entire mt genomes of three species of tick for the first time: Bothriocroton auruginans, B. hydrosauri and H. (Kaiseriana) novaeguineae, and we sequenced the 18S rRNA gene of B. hydrosauri and H. (Kaiseriana) bancrofti. In our phylogenetic trees, Alloceraea was the sister to Archaeocroton sphenodonti, from New Zealand; to the exclusion
Samuel Kelava, Dmitry A. Apanaskevich, Renfu Shao, Alexander W. Gofton, Ben J. Mans, Ernest J. M. Teo, Gerrut Norval, Dayana Barker, Ryo Nakao, Stephen C. Barker   +9 more
wiley   +1 more source