A study on the long-term efficacy of Seresto ® collars in preventing Babesia canis (Piana & Galli-Valerio, 1895) transmission to dogs by infected Dermacentor reticulatus (Fabricius, 1794) ticks

An imidacloprid/flumethrin collar (Seresto ®) was previously shown to prevent infection with Babesia canis, transmitted by Dermacentor reticulatus, in dogs for up to 1 month after application. The present study ev...
Source: Parasites and Vectors - Category: Microbiology Authors: Tags: Research Source Type: research

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by Luis Miguel Gonz ález, Karel Estrada, Ricardo Grande, Verónica Jiménez-Jacinto, Leticia Vega-Alvarado, Elena Sevilla, Jorge de la Barrera, Isabel Cuesta, Ángel Zaballos, José Manuel Bautista, Cheryl A. Lobo, Alejandro Sánchez-Flores, Estrella Montero Babesiosis is considered an emerging disease because its incidence has significantly increased in the last 30 years, providing evidence of the expanding range of this rare but potentially life-threatening zoonotic disease.Babesia divergens is a causative agent of babesiosis in humans and cattle in Europe. The recently sequenced gen...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
In this study, 13-15-months-old Holstein-Friesian steers were immunised with a subunit vaccine as a prime and a modified vaccinia Ankara vector as a boost, both expressing a chimeric multi-antigen (rMABbo – rMVA). This antigen includes the immunodominant B and T cell epitopes of three B. bovis proteins: merozoite surface antigen - 2c (MSA - 2c), rhoptry associated protein 1 (RAP - 1) and heat shock protein 20 (HSP20). Responses were compared with the Babesia bovis live attenuated vaccine used in Argentina (R1A). Eleven weeks after the first immunisation, all bovines were challenged by the inoculation of a virulent B....
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
Publication date: Available online 15 August 2019Source: Ticks and Tick-borne DiseasesAuthor(s): Jiří Černý, Buyantogtokh Buyannemekh, Tersia Needham, Gantulga Gankhuyag, Dashzeveg OyuntsetsegAbstractTicks and tick-borne pathogens (TBPs) pose a considerable threat to human and animal health in Mongolia; a large and sparsely inhabited country whose economy is largely dependent on animal production. Intensive contact between herdsmen and their livestock, together with the use of pastures without fencing, allows contact between wildlife, domestic animals and humans, thus creating ideal conditions for epizoonos...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
Abstract The discovery of a plastid in apicomplexan parasites was hoped to be a watershed moment in the treatment of parasitic diseases as it revealed drug targets that are implicitly divergent from host molecular processes. Indeed, this organelle, known as the apicoplast, has since been a productive therapeutic target for pharmaceutical interventions against infections by Plasmodium, Toxoplasma, Babesia, and Theileria. However, some inhibitors of the apicoplast are restricted in their treatment utility because of their slow-kill kinetics, and this characteristic is called the delayed death effect. Here we review ...
Source: Trends in Parasitology - Category: Parasitology Authors: Tags: Trends Parasitol Source Type: research
by Evan M. Bloch, Zakayo Mrango, Mabula Kasubi, Jerusha Weaver, Aleksandra Mihailovic, Beatriz Munoz, Anna Weimer, Andrew Levin, Laura Tonnetti, Jeffrey M. Linnen, Vanessa Br ès, Douglas E. Norris, Giovanna Carpi, Sheila K. West BackgroundBabesia, a tick-borne genus of intraerythrocytic parasites, is understudied in humans outside of established high-endemic areas. There is a paucity of data onBabesia in Africa, despite evidence that it is regionally present. A pilot study suggested thatBabesia was present in a rural district of Tanzania. Methodology/Principal findingsA cross-sectional study was conducted July-Augus...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
CONCLUSIONS: This is the largest B. microti prevalence study performed in Canada. The results indicate very low prevalence, with only one TMA-confirmed-positive donation of 50,752 tested. This donor was from the only region in Canada where autochthonous infection has been reported. Seropositive donations in southwestern Ontario suggest low prevalence; travel should not be ruled out given the proximity to the US border. PMID: 31385317 [PubMed - as supplied by publisher]
Source: Transfusion - Category: Hematology Authors: Tags: Transfusion Source Type: research
The objective of the present study was to investigate the seroepidemiology of T. equi and B. caballi in horses reared in various Mongolian provinces. Serum samples prepared from blood collected from horses in 19 Mongolian provinces were screened for antibodies specific to T. equi and B. caballi using enzyme-linked immunosorbent assays based on recombinant forms of T. equi merozoite antigen-2 and the B. caballi 48-kDa merozoite rhoptry protein, respectively. Of 1,282 horses analyzed, 423 (33%) and 182 (14.2%) were sero-positive for T. equi and B. caballi, respectively. Additionally, 518 (40.4%) were positive for at least 1 ...
Source: The Journal of Parasitology - Category: Parasitology Authors: Tags: J Parasitol Source Type: research
Answer to Parasite Case of the Week 554:Babesiaspecies. Without a travel history, the differential diagnosis includesPlasmodium falciparummalaria given that only ring forms are seen and there is a high parasitemia; however, the following features are supportive of babesiosis:1. Multiple (4) small forms within a single cell that are not a clear schizont form ofPlasmodium.2. Easily-identified extracellular forms.3. Lack of malaria pigmentAs Blaine mentioned, the rings are not thin and delicate as would normally be seen withP. falciparuminfection. While thicker rings are commonly seen in'older'blood (i.e., blood that was>2...
Source: Creepy Dreadful Wonderful Parasites - Category: Parasitology Source Type: blogs
Publication date: Available online 19 July 2019Source: Veterinary ParasitologyAuthor(s): Mohamed Abdo Rizk, Shimaa Abd El-Salam El-Sayed, Sabry El-Khodery, Naoaki Yokoyama, Ikuo IgarashiAbstractThere is an innovative approach to discovering and developing novel potent and safe anti-Babesia and anti-Theileria agents for the control of animal piroplasmosis. Large-scale screening of 400 compounds from a Malaria Box (a treasure trove of 400 diverse compounds with antimalarial activity has been established by Medicines for Malaria Venture) against the in vitro growth of bovine Babesia and equine Babesia and Theileria parasites ...
Source: Veterinary Parasitology - Category: Veterinary Research Source Type: research
We report a case of severe babesiosis caused by the bovine pathogen Babesia divergens with the development of multisystem failure in a splenic host. Immunosuppression other than splenectomy can also predispose people to B. divergens. There was heavy multiple invasion of up to 14 parasites inside the erythrocyte, which had not been previously observed even in asplenic hosts. The factors preventing the effectiveness of the vector Ixodes ricinus in the transmission of the organisms to humans are discussed.
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
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