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https://www.readbyqxmd.com/read/28717323/epidemiological-study-of-tick-infestation-in-buffalo-of-various-regions-of-district-khairpur-pakistan
#1
Farzana Abbasi, Imtiaz Hussain Raja Abbasi, Tahmeena Fakhur Nissa, Zohaib Ahmed Bhutto, Muhammed Asif Arain, Rab Nawaz Soomro, Farman Ali Siyal, Sarfraz Ali Fazlani
AIM: The aim of this study was to determine the epidemiological infestation and identification of Ixodidae and Argasidae ticks species in buffalo of different parts of district Khairpur, Pakistan. MATERIALS AND METHODS: A total of 720 Water buffaloes from three tehsils (subdivisions) were selected randomly and examined from organized and unorganized dairy farms for tick infestation in district Khairpur, Pakistan. This epidemiological survey was conducted during April to September 2015...
June 2017: Veterinary World
https://www.readbyqxmd.com/read/28714333/-borrelia-miyamotoi-a-recently-identified-human-pathogenic-tick-borne-relapsing-fever-spirochete
#2
Sándor Szekeres, András Lakos, Gábor Földvári
Borrelia miyamotoi is a recently described relapsing fever spirochete transmitted by ticks of the Ixodes ricinus complex. This pathogen is different from Borrelia burgdorferi sensu lato (the Lyme borreliosis spirochetes) in its epidemiology, ecology and also genetics. Over 50 patients have been described worldwide with Borrelia miyamotoi disease, and three immunocompromised patients were reported with neurological symptoms. Our knowledge about Borrelia miyamotoi infection in ticks and its distribution in different habitats and also the mechanism of the infection is limited...
July 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28697801/interferon-%C3%AE-dependent-control-of-anaplasma-phagocytophilum-by-murine-neutrophil-granulocytes
#3
Kathrin Gussmann, Susanne Kirschnek, Friederike D von Loewenich
BACKGROUND: Anaplasma phagocytophilum is a Gram-negative obligate intracellular bacterium that is transmitted by ticks of the Ixodes ricinus complex. It replicates in neutrophils and elicits febrile disease in humans and animals. Because of its striking tropism for neutrophils, A. phagocytophilum has been used as a model organism to study the immune response against obligate intracellular pathogens. In mice, the control of A. phagocytophilum in the early phase of infection is dependent on natural killer cell-derived interferon-γ (IFN-γ)...
July 12, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28693561/goats-as-sentinel-hosts-for-the-detection-of-tick-borne-encephalitis-risk-areas-in-the-canton-of-valais-switzerland
#4
Nadia Rieille, Christine Klaus, Donata Hoffmann, Olivier Péter, Maarten J Voordouw
BACKGROUND: Tick-borne encephalitis (TBE) is an important tick-borne disease in Europe. Detection of the TBE virus (TBEV) in local populations of Ixodes ricinus ticks is the most reliable proof that a given area is at risk for TBE, but this approach is time-consuming and expensive. A cheaper and simpler approach is to use immunology-based methods to screen vertebrate hosts for TBEV-specific antibodies and subsequently test the tick populations at locations with seropositive animals. RESULTS: The purpose of the present study was to use goats as sentinel animals to identify new risk areas for TBE in the canton of Valais in Switzerland...
July 11, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28690096/modeling-the-effects-of-variable-feeding-patterns-of-larval-ticks-on-the-transmission-of-borrelia-lusitaniae-and-borrelia-afzelii
#5
Luca Ferreri, Silvia Perazzo, Ezio Venturino, Mario Giacobini, Luigi Bertolotti, Alessandro Mannelli
Spirochetes belonging to the Borrelia burgdoferi sensu lato (sl) group cause Lyme Borreliosis (LB), which is the most commonly reported vector-borne zoonosis in Europe. B. burgdorferi sl is maintained in nature in a complex cycle involving Ixodes ricinus ticks and several species of vertebrate hosts. The transmission dynamics of B. burgdorferi sl is complicated by the varying competence of animals for different genospecies of spirochetes that, in turn, vary in their capability of causing disease. In this study, a set of difference equations simplifying the complex interaction between vectors and their hosts (competent and not for Borrelia) is built to gain insights into conditions underlying the dominance of B...
July 6, 2017: Theoretical Population Biology
https://www.readbyqxmd.com/read/28684041/five-cases-of-vector-borne-francisella-tularensis-holarctica-infections-in-south-western-germany-and-genetic-diversity
#6
Johannes P Borde, Sabine Zange, Markus H Antwerpen, Enrico Georgi, Heiner von Buttlar, Winfried V Kern, Siegbert Rieg
Tularemia is a rare zoonotic disease in Germany. Francisella tularensis has been isolated previously from ticks in southern Germany underscoring the importance of ticks (Ixodes ricinus) in tularemia transmission, but there have been only few reports from this region with single cases or small case series of tick-borne transmissions of tularemia. We report five cases of non-game animal associated tularemia diagnosed from 2010 to 2016 in southwestern Germany - Baden-Wuerttemberg. Our case series and molecular typing (MLVA) results add published clinical experience to this underdiagnosed disease and consolidate previous findings regarding tick-borne transmission of tularemia and phylogenetic diversity in Germany...
August 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28676905/babesia-theileria-and-hepatozoon-species-in-ticks-infesting-animal-hosts-in-romania
#7
Martin O Andersson, Conny Tolf, Paula Tamba, Mircea Stefanache, Gabriel Radbea, Franz Rubel, Jonas Waldenström, Gerhard Dobler, Lidia Chițimia-Dobler
Babesia spp., Theileria spp., and Hepatozoon spp. are tick-transmitted apicomplexan parasites that cause several important diseases in animals. To increase current knowledge about the diversity of tick-transmitted pathogens in Romania, we investigated the occurrence of Babesia spp., Theileria spp., and Hepatozoon spp. in a wide range of tick species infesting animal hosts. We collected 852 ticks from 10 different animal species from 20 counties in Romania. The assessment was based on detection of parasite DNA by PCR...
July 4, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28662690/comparative-efficacy-of-a-new-spot-on-combination-product-containing-selamectin-and-sarolaner-stronghold%C3%A2-plus-versus-fluralaner-bravecto%C3%A2-against-induced-infestations-with-ixodes-ricinus-ticks-on-cats
#8
Thomas Geurden, Stasia Borowski, Magda Wozniakiewicz, Vickie King, Josephus Fourie, Julian Liebenberg
BACKGROUND: Ticks are increasingly reported on cats worldwide, with Ixodes ricinus being a relevant species across Europe and in near by areas of North Africa and the Middle East. Yet there are few acaracidal products with proven efficacy approved for use in cats. The objective of this study was to compare the efficacy of a new spot-on formulation containing selamectin and sarolaner with a topical application of fluralaner (Bravecto®) against Ixodes ricinus ticks on cats. To that end, twenty-four (24) cats were randomly allocated to one of three treatment groups...
June 29, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28654319/partial-characterization-of-tick-borne-encephalitis-virus-isolates-from-ticks-of-southern-ukraine
#9
Oksana O Yurchenko, Dmytro O Dubina, Nataliya O Vynograd, Jean-Paul Gonzalez
Tick-borne encephalitis (TBE) is the most common tick-borne viral infection in Eurasia; thousands of human cases are annually reported from several European countries. Several tick species are vectors of the tick-borne encephalitis virus (TBEV), while TBE appears to be spreading from the Eurasian continent westward to Europe. Fifteen study sites were chosen from five territories of southern Ukraine, including Odessa, Mykolaiv, Kherson Oblast, the Autonomous Republic of Crimea, and Sevastopol. Tick collection was performed in spring season of three consecutive years (1988-1990) using either flagging technique or direct collection of specimens feeding on cattle...
June 27, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28648772/clinical-outbreak-of-babesiosis-caused-by-babesia-capreoli-in-captive-reindeer-rangifer-tarandus-tarandus-in-the-netherlands
#10
Jan H Bos, Fokko C Klip, Hein Sprong, Els M Broens, Marja J L Kik
From a herd of captive reindeer (Rangifer tarandus tarandus) consisting of two males and seven females with five calves, three calves were diagnosed on post mortem examination with a Babesia capreoli infection. The diagnosis was indicated by PCR and when the other reindeer were examined two adult females and a one-year-old male were Babesia-positive. Molecular characterization of the 18S rDNA of the parasite showed complete identity with known B. capreoli sequences. Ixodes ricinus has been demonstrated to be a competent vector for B...
August 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28647128/seasonal-dynamics-of-adult-dermacentor-reticulatus-in-a-peri-urban-park-in-southern-europe
#11
Emanuela Olivieri, Alessia Libera Gazzonis, Sergio Aurelio Zanzani, Fabrizia Veronesi, Maria Teresa Manfredi
Studies on the human-biting pathogen vectors Dermacentor reticulatus and Ixodes ricinus have been scarce in southern Europe. The aims of the present study were to determine the abundance of these ticks in a peri-urban park in northern Italy, describe the seasonal activity of D. reticulatus and examine the correlation between tick occurrence and environmental factors. Ticks were collected monthly from April 2015 to May 2016 using both dragging and flagging techniques. Various climatic variables (mean temperature, relative humidity and evapotranspiration for the collection dates; and 30-day moving averages preceding each collection date were calculated for rainfall, temperature, relative humidity and saturation deficit) also were recorded...
August 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28631117/multi-criteria-decision-analysis-to-model-ixodes-ricinus-habitat-suitability
#12
Raphaël Rousseau, Guy McGrath, Barry J McMahon, Sophie O Vanwambeke
Tick-borne diseases present a major threat to both human and livestock health throughout Europe. The risk of infection is directly related to the presence of its vector. Thereby it is important to know their distribution, which is strongly associated with environmental factors: the presence and availability of a suitable habitat, of a suitable climate and of hosts. The present study models the habitat suitability for Ixodes ricinus in Ireland, where data on tick distribution are scarce. Tick habitat suitability was estimated at a coarse scale (10 km) with a multi-criteria decision analysis (MCDA) method according to four different scenarios (depending on the variables used and on the weights granted to each of them)...
June 19, 2017: EcoHealth
https://www.readbyqxmd.com/read/28620590/functional-redundancy-and-ecological-innovation-shape-the-circulation-of-tick-transmitted-pathogens
#13
Agustín Estrada-Peña, José de la Fuente, Alejandro Cabezas-Cruz
Ticks are vectors of pathogens affecting human and animal health worldwide. Nevertheless, the ecological and evolutionary interactions between ticks, hosts, and pathogens are largely unknown. Here, we integrated a framework to evaluate the associations of the tick Ixodes ricinus with its hosts and environmental niches that impact pathogen circulation. The analysis of tick-hosts association suggested that mammals and lizards were the ancestral hosts of this tick species, and that a leap to Aves occurred around 120 M years ago...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28612350/blood-donor-borrelia-burgdorferi-sensu-lato-seroprevalence-and-history-of-tick-bites-at-a-northern-limit-of-the-vector-distribution
#14
Dag Hvidsten, Liisa Mortensen, Bjørn Straume, Mirjana Grujic Arsenovic, Anne-Berit Pedersen, Gro Lyngås, Jeremy S Gray, Nils Grude
In order to study the antibody seroprevalence of the causal agent of Lyme borreliosis, Borrelia burgdorferi sensu lato (s.l.), and the history of tick bites at a geographical distribution limit of Ixodes ricinus, we compared healthy blood donors in geographically extreme regions: the borreliosis-endemic Vestfold County (59°N) and the region of northern Norway. Blood samples were screened using IgG/VlsE ELISA, and positive/borderline samples were confirmed using C6 ELISA and immunoblot assays. Also, donors completed a questionnaire consisting of several items including the places they have lived, and whether they owned any pets...
June 14, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28605964/impact-of-a-freeway-on-the-dispersal-of-ticks-and-ixodes-ricinus-borne-pathogens-forested-resting-areas-may-become-lyme-disease-hotspots
#15
Sándor Hornok, Maria Mulvihill, Krisztina Szőke, Enikő Gönczi, Kinga M Sulyok, Miklós Gyuranecz, Regina Hofmann-Lehmann
Man-made barriers are well known for their effects on ecosystems. Habitat fragmentation, for instance, is a recognised consequence of modern-day infrastructure. The aim of the present study was to investigate the diversity and abundance of tick species, as well as the risks of acquiring tick-borne infections in habitats adjacent to a freeway. Therefore, ixodid ticks were collected from the vegetation at two-week intervals (in the main tick season, from March to June) in eight habitats of different types (forest, grove, grassland) along both sides of a freeway...
June 2017: Acta Veterinaria Hungarica
https://www.readbyqxmd.com/read/28593480/difference-in-susceptibility-of-small-rodent-host-species-to-infestation-by-ixodes-ricinus-larvae
#16
László Egyed
In a laboratory experiment (repeated eight times) individuals of six small rodent species were mixed with 500 Ixodes ricinus larvae for 24 h, than over a 3-day-long observation period engorged ticks fallen from individually kept rodents were counted. Forty engorged larvae fell from the hosts, 25% from striped field mice, 32.5% from house mice, 22.5% from common voles, 10% from bank voles, while wood mouse and steppe mouse proved to be almost free of successfully infesting ticks (both 5%). Statistical analysis indicated, that tick burden differed significantly among host species...
June 7, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28589297/sulfate-turpentine-a-resource-of-tick-repellent-compounds
#17
Fredrik Schubert, Katinka Pålsson, Ellen Santangelo, Anna-Karin Borg-Karlson
Compounds with tick (Ixodes ricinus) repellent properties were isolated from sulfate turpentine consisting of Norway spruce (80%) and Scots pine (20%) from southern Sweden. The turpentine was divided into two fractions by distillation under reduced pressure resulting in one monoterpene hydrocarbon fraction and a residual containing higher boiling terpenoids. The monoterpene fraction was further oxidized with SeO2 to obtain oxygenated monoterpenes with potential tick repellent properties. The oxidized fraction and the high boiling distillation residual were each separated by medium pressure liquid chromatography...
June 6, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28583197/no-evidence-of-borrelia-mayonii-in-an-endemic-area-for-lyme-borreliosis-in-france
#18
Pierre H Boyer, Sylvie J De Martino, Yves Hansmann, Laurence Zilliox, Nathalie Boulanger, Benoît Jaulhac
BACKGROUND: Borrelia mayonii is currently the latest species belonging to the Borrelia burgdorferi (sensu lato) complex to be discovered. Interestingly it is involved in human pathology causing a high fever. We looked for its presence in post- tick bite febrile patients as well as in Ixodes ricinus ticks in an endemic area of France. RESULTS: After ensuring that our molecular technics correctly detected B. mayonii, 575 patients and 3,122 Ixodes ricinus nymphs were tested...
June 5, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28570038/molecular-detecting-of-piroplasms-in-feeding-and-questing-ixodes-ricinus-ticks
#19
Małgorzata Adamska, Bogumiła Skotarczak
The purpose of this study was to detect piroplasms, which are pathogens of veterinary and zoonotic importance in ticks, that were collected from ponies and field vegetation and to determine the role of Shetland ponies as potential reservoir hosts for piroplasms. A total of 1737 feeding and 371 questing Ixodes ricinus collected from horses or vegetation were tested for the presence of Babesia and Theileria DNA. Piroplasm 18S rRNA gene amplification was conducted, and the obtained amplicons were sequenced. Babesia DNA was detected in only three ticks (one tick collected from a pony and two collected from vegetation), and all of the obtained sequences had 100% similarity to B...
2017: Annals of Parasitology
https://www.readbyqxmd.com/read/28566356/functional-morphology-of-tarsal-adhesive-pads-and-attachment-ability-in-ticks-ixodes-ricinus-arachnida-acari-ixodidae
#20
Dagmar Voigt, Stanislav Gorb
The presence of well-developed, elastic claws on ticks and widely pilose hosts led us to hypothesise that ticks are mostly adapted to attachment and locomotion on rough, strongly corrugated and hairy, felt-like substrates. However, by using a combination of morphological and experimental approaches, we visualised the ultrastructure of attachment devices of Ixodes ricinus and showed that this species adheres more strongly to smooth surfaces than to rough ones. Between paired, elongated, curved, elastic claws, I...
June 1, 2017: Journal of Experimental Biology
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