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Ixodes ricinus

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https://www.readbyqxmd.com/read/29679202/tick-infestation-and-occurrence-of-anaplasma-phagocytophilum-and-piroplasms-in-cattle-in-the-republic-of-serbia
#1
Ana Vasić, Marion Nieder, Nemanja Zdravković, Jovan Bojkovski, Dejan Bugarski, Ivan Pavlović, Cornelia Silaghi
Ticks transmit important pathogens affecting cattle such as intracellular bacteria of the genus Anaplasma or protozoa of the order Piroplasmida. This study aimed at assessing tick species present on pastures and cattle and determining occurrence of the tick-borne pathogens Anaplasma phagocytophilum and Babesia spp. in cattle. During May and June 2013, ticks and EDTA blood were collected from 185 dairy cows at six locations in Serbia. Ticks were also collected directly from the pastures at four of these locations...
April 20, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29679010/genetically-engineered-two-warhead-evasins-provide-a-method-to-achieve-precision-targeting-of-disease-relevant-chemokine-subsets
#2
Yara Alenazi, Kamayani Singh, Graham Davies, James R O Eaton, Philip Elders, Akane Kawamura, Shoumo Bhattacharya
Both CC and CXC-class chemokines drive inflammatory disease. Tick salivary chemokine-binding proteins (CKBPs), or evasins, specifically bind subsets of CC- or CXC-chemokines, and could precisely target disease-relevant chemokines. Here we have used yeast surface display to identify two tick evasins: a CC-CKBP, P1243 from Amblyomma americanum and a CXC-CKBP, P1156 from Ixodes ricinus. P1243 binds 11 CC-chemokines with Kd  < 10 nM, and 10 CC-chemokines with Kd between 10 and 100 nM. P1156 binds two ELR + CXC-chemokines with Kd  < 10 nM, and four ELR + CXC-chemokines with Kd between 10 and 100 nM...
April 20, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29678403/tick-borne-encephalitis-virus-borrelia-burgdorferi-sensu-lato-borrelia-miyamotoi-anaplasma-phagocytophilum-and-candidatus-neoehrlichia-mikurensis-in-ixodes-ricinus-ticks-collected-from-recreational-islands-in-southern-norway
#3
Vivian Kjelland, Katrine M Paulsen, Rikke Rollum, Andrew Jenkins, Snorre Stuen, Arnulf Soleng, Kristin S Edgar, Heidi H Lindstedt, Kirsti Vaino, Moustafa Gibory, Åshild K Andreassen
The aim of this study was to determine the occurrence of tick-borne pathogens of medical importance in questing ticks collected from five recreationally used islands along the Norwegian coastline. Furthermore, since coinfection may affect the disease severity, this study aimed to determine the extent of coinfection in individual ticks or co-localization of tick-borne pathogens. In all, 4158 questing Ixodes ricinus ticks were analyzed. For detection of tick-borne encephalitis virus (TBEV), nymphs (3690) were analyzed in pools of ten...
April 12, 2018: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29678401/geographical-distribution-climate-adaptation-and-vector-competence-of-the-eurasian-hard-tick-haemaphysalis-concinna
#4
Franz Rubel, Katharina Brugger, Melanie Walter, Janna R Vogelgesang, Yuliya M Didyk, Su Fu, Olaf Kahl
The ixodid tick Haemaphysalis concinna Koch, 1844 is a proven vector of tick-borne encephalitis (TBE) virus and Francisella tularensis, the causative agent of tularaemia. In the present study, up-to-date maps depicting the geographical distribution and climate adaptation of H. concinna are presented. A dataset was compiled, resulting in 656 georeferenced locations in Eurasia. The distribution of H. concinna ranges from the Spanish Atlantic coast to Kamchatka, Russia, within the belt of 28-64° N latitude...
April 10, 2018: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29667575/a-cluster-of-two-human-cases-of-tick-borne-encephalitis-tbe-transmitted-by-unpasteurised-goat-milk-and-cheese-in-germany-may-2016
#5
S O Brockmann, R Oehme, T Buckenmaier, M Beer, A Jeffery-Smith, M Spannenkrebs, S Haag-Milz, C Wagner-Wiening, C Schlegel, J Fritz, S Zange, M Bestehorn, A Lindau, D Hoffmann, S Tiberi, U Mackenstedt, G Dobler
In May 2016, two cases of tick-borne encephalitis (TBE) were confirmed by serology (positive IgM and IgG antibodies against TBE virus (TBEV) in serum), with a possible link to raw milk and cheese from a goat farm in a region in Baden-Württemberg, Germany not previously known as TBE-endemic. The outbreak investigation identified 32 consumers of goat dairy products (29 consumers, one farm employee, two owners) of whom none had IgM antibodies against TBEV 3-8 weeks after consumption. Of the 27 notified TBE cases in the State, none reported consumption of raw goat milk or cheese from the suspected farm...
April 2018: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/29664700/rickettsia-helvetica-in-human-parasitizing-and-free-living-ixodes-ricinus-from-urban-and-wild-green-areas-in-the-metropolitan-city-of-rome-italy
#6
Manuela Scarpulla, Giulia Barlozzari, Laura Salvato, Claudio De Liberato, Raniero Lorenzetti, Gladia Macrì
Rickettsia helvetica is an emerging human pathogen, belonging to the spotted fever group (SFG) rickettsiae, associated with generally aneruptive fever, meningitis, and sudden death in chronic perimyocarditis. In this study, we describe the detection of R. helvetica in human-parasitizing and free-living Ixodes ricinus from the Metropolitan City of Rome. The pathogen was found in a tick acquired by a woman in an urban park. The circulation of R. helvetica was further confirmed by its detection in free-living ticks from a wild green area...
April 17, 2018: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/29664395/fatal-tick-borne-encephalitis-virus-infections-caused-by-siberian-and-european-subtypes-finland-2015
#7
Suvi Kuivanen, Teemu Smura, Kirsi Rantanen, Leena Kämppi, Jonas Kantonen, Mia Kero, Anu Jääskeläinen, Anne J Jääskeläinen, Jussi Sane, Liisa Myllykangas, Anders Paetau, Olli Vapalahti
In most locations except for Russia, tick-borne encephalitis is mainly caused by the European virus subtype. In 2015, fatal infections caused by European and Siberian tick-borne encephalitis virus subtypes in the same Ixodes ricinus tick focus in Finland raised concern over further spread of the Siberian subtype among widespread tick species.
May 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29660558/multilocus-sequence-analysis-of-borrelia-burgdorferi-sensu-lato-isolates-from-western-siberia-russia-and-northern-mongolia
#8
Yuliya Sabitova, Nataliya Fomenko, Artem Tikunov, Oleg Stronin, Maxim Khasnatinov, Davaajav Abmed, Galina Danchinova, Irina Golovljova, Nina Tikunova
Lyme borreliosis (LB) is the most frequently recorded tick-transmitted disease in Eurasia. Tomsk Province, Western Siberia in Russia and Selenge Aimag in Northern Mongolia are leading regions in the LB incidence rate in these countries. Spirochaetes of the Borrelia burgdorferi sensu lato (s.l.) complex isolated from Ixodes ticks from Tomsk Province (n = 56) and Ixodes persulcatus ticks from Selenge Aimag (n = 5) were genetically characterized using Multi Locus Sequence Typing (MLST), analysis of the 5S23S rRNA intergenic spacer (IGS) amplicons, and p83/100 gene sequencing...
April 13, 2018: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29655579/hungarian-tick-borne-encephalitis-viruses-isolated-from-a-0-5-ha-focus-are-closely-related-to-finnish-strains
#9
László Egyed, Zsuzsanna Rónai, Ádám Dán
Four tick-borne encephalitis virus strains were isolated from a small 0.5-ha focus over a six-year-long period (2011-2016) in Hungary. Two strains with identical genomes were isolated from Ixodes ricinus and Haemaphysalis concinna two months apart, which shows that the virus had not evolved separately in these tick species. Whole-genome sequencing of the virus revealed that the isolates differed from each other in 4 amino acids and 9 nucleotides. The calculated substitution rates indicated that the speed of genome evolution differs from habitat to habitat, and continuously changes even within the same focus...
April 7, 2018: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29649132/effect-of-climate-and-land-use-on-the-spatio-temporal-variability-of-tick-borne-bacteria-in-europe
#10
Roberto Rosà, Veronica Andreo, Valentina Tagliapietra, Ivana Baráková, Daniele Arnoldi, Heidi Christine Hauffe, Mattia Manica, Fausta Rosso, Lucia Blaňarová, Martin Bona, Marketa Derdáková, Zuzana Hamšíková, Maria Kazimírová, Jasna Kraljik, Elena Kocianová, Lenka Mahríková, Lenka Minichová, Ladislav Mošanský, Mirko Slovák, Michal Stanko, Eva Špitalská, Els Ducheyne, Markus Neteler, Zdenek Hubálek, Ivo Rudolf, Kristyna Venclikova, Cornelia Silaghi, Evelyn Overzier, Robert Farkas, Gábor Földvári, Sándor Hornok, Nóra Takács, Annapaola Rizzoli
The incidence of tick-borne diseases caused by Borrelia burgdorferi sensu lato, Anaplasma phagocytophilum and Rickettsia spp. has been rising in Europe in recent decades. Early pre-assessment of acarological hazard still represents a complex challenge. The aim of this study was to model Ixodes ricinus questing nymph density and its infection rate with B. burgdorferi s.l., A. phagocytophilum and Rickettsia spp. in five European countries (Italy, Germany, Czech Republic, Slovakia, Hungary) in various land cover types differing in use and anthropisation (agricultural, urban and natural) with climatic and environmental factors (Normalized Difference Vegetation Index (NDVI), Normalized Difference Water Index (NDWI), Land Surface Temperature (LST) and precipitation)...
April 12, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29623261/increased-relative-risk-of-tick-borne-encephalitis-in-warmer-weather
#11
Milan Daniel, Vlasta Danielová, Alena Fialová, Marek Malý, Bohumír Kříž, Patricia A Nuttall
Tick-borne encephalitis (TBE) is a serious acute neuroinfection of humans caused by a tick-borne flavivirus. The disease is typically seasonal, linked to the host-seeking activity of Ixodes ricinus (predominantly nymphs), the principal European tick vector species. To address the need for accurate risk predictions of contracting TBE, data on 4,044 TBE cases reported in the Czech Republic during 2001-2006 were compared with questing activity of I. ricinus nymphs monitored weekly at a defined location for the same 6-year period...
2018: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29623260/population-genomics-of-francisella-tularensis-subsp-holarctica-and-its-implication-on-the-eco-epidemiology-of-tularemia-in-switzerland
#12
Matthias Wittwer, Ekkehard Altpeter, Paola Pilo, Sebastian M Gygli, Christian Beuret, Frederic Foucault, Rahel Ackermann-Gäumann, Urs Karrer, Daniela Jacob, Roland Grunow, Nadia Schürch
Whole genome sequencing (WGS) methods provide new possibilities in the field of molecular epidemiology. This is particularly true for monomorphic organisms where the discriminatory power of traditional methods (e.g., restriction enzyme length polymorphism typing, multi locus sequence typing etc.) is inadequate to elucidate complex disease transmission patterns, as well as resolving the phylogeny at high resolution on a micro-geographic scale. In this study, we present insights into the population structure of Francisella tularensis subsp...
2018: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29606622/factors-responsible-for-ixodes-ricinus-nymph-abundance-are-soil-features-indicators-of-tick-abundance-in-a-french-region-where-lyme-borreliosis-is-endemic
#13
Valérie Goldstein, Nathalie Boulanger, Dominique Schwartz, Jean-Claude George, Damien Ertlen, Laurence Zilliox, Mickaël Schaeffer, Benoît Jaulhac
In Europe, the hard tick Ixodes ricinus (Acari: Ixodidae) is the main vector of Lyme borreliosis spirochetes (Borrelia burgdorferi sensu lato group). A field study was conducted to evaluate the abundance of Ixodes nymphs in the French region of Alsace, where Lyme borreliosis is endemic, and to determine whether environmental factors such as soil moisture and composition may be associated with nymph abundance. In the ten sites studied, ticks were collected by drag sampling from March to October in 2013 and 2014...
March 26, 2018: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29606618/preventing-tick-attachment-to-dogs-using-essential-oils
#14
Penelope Goode, Lauren Ellse, Richard Wall
Preventing tick bites using repellents could make a valuable contribution to an integrated tick management programme for dogs. Here, the ability of a range of essential oils or active ingredients of commercially available repellents, to abolish the orientation and taxis of the tick Ixodes ricinus towards sebum extracted from dog hair was examined in laboratory bioassays. Substantial differences between oils were observed, but turmeric oil was both able to prevent a climbing response by ticks and had a longer residual activity than other oils...
March 27, 2018: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29589118/tick-borne-pathogens-in-tick-species-infesting-humans-in-sibiu-county-central-romania
#15
Martin O Andersson, Georgeta Marga, Teofilia Banu, Gerhard Dobler, Lidia Chitimia-Dobler
Romania has a highly diverse tick fauna. Consequently, a high diversity of tick-transmitted pathogens might be a potential threat to humans. However, only a limited number of tick species regularly infest humans, and pathogens present in such species are therefore of particular interest from a medical perspective. In this study, 297 ticks were collected from humans during 2013 and 2014. Ixodes ricinus was the predominant tick species, accounting for 272 specimens or 91.6% of the ticks in the study. Nevertheless, other tick species were also found to infest humans: Dermacentor marginatus constituted 7% of the ticks found on humans (21/297), Haemaphysalis punctata 1% (3/297), and Haemaphysalis concinna 0...
March 28, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29572699/differential-diagnosis-of-ixodes-ricinus-and-ixodes-persulcatus-nymphs-and-larvae
#16
L A Grigoryeva, M K Stanyukovich
We developed a method for differential diagnosis of nymphs and larvae of sheep (Ixodes ricinus (L.)) and taiga (I. persulcatus Sch.) ticks (Parasitiformes: Ixodidae) which allows to identify live material in the field.
March 23, 2018: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/29567145/antiplasmodial-activity-of-tick-defensins-in-a-mouse-model-of-malaria
#17
Joana Couto, Miray Tonk, Joana Ferrolho, Sandra Antunes, Andreas Vilcinskas, José de la Fuente, Ana Domingos, Alejandro Cabezas-Cruz
Malaria is a mosquito-borne disease affecting millions of people mainly in Sub-Saharan Africa, Asia and some South American countries. Drug resistance to first-line antimalarial drugs (e.g. chloroquine, sulfadoxine-pyrimethamine and artemisinin) is a major constrain in malaria control. Antimicrobial peptides (AMPs) have shown promising results in controlling Plasmodium spp. parasitemia in in vitro and in vivo models of infection. Defensins are AMPs that act primarily by disrupting the integrity of cell membranes of invasive microbes...
March 15, 2018: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29563715/a-novel-scoring-system-approach-to-assess-patients-with-lyme-disease-nutech-functional-score
#18
Geeta Shroff, Petra Hopf-Seidel
Introduction: A bacterial infection by Borrelia burgdorferi referred to as Lyme disease (LD) or borreliosis is transmitted mostly by a bite of the tick Ixodes scapularis in the USA and Ixodes ricinus in Europe. Various tests are used for the diagnosis of LD, but their results are often unreliable. We compiled a list of clinically visible and patient-reported symptoms that are associated with LD. Based on this list, we developed a novel scoring system. Methodology: Nutech functional Score (NFS), which is a 43 point positional (every symptom is subgraded and each alternative gets some points according to its position) and directional (moves in direction bad to good) scoring system that assesses the patient's condition...
January 2018: Journal of Global Infectious Diseases
https://www.readbyqxmd.com/read/29560357/crimean-congo-hemorrhagic-fever-virus-and-borrelia-burgdorferi-sensu-lato-in-ticks-from-kosovo-and-albania
#19
Kurtesh Sherifi, Agim Rexhepi, Kristaq Berxholi, Blerta Mehmedi, Rreze M Gecaj, Zamira Hoxha, Anja Joachim, Georg G Duscher
Tick-borne diseases pose a serious threat to human health in South-Eastern Europe, including Kosovo. While Crimean-Congo hemorrhagic fever (CCHF) is a well-known emerging infection in this area, there are no accurate data on Lyme borreliosis and tick-borne encephalitis (TBE). Therefore, we sampled and tested 795 ticks. Ixodes ricinus ( n  = 218), Dermacentor marginatus ( n  = 98), and Haemaphysalis spp. ( n  = 24) were collected from the environment by flagging (all from Kosovo), while Hyalomma marginatum ( n  = 199 from Kosovo, all from Kosovo) and Rhipicephalus bursa ( n  = 130, 126 from Albania) could be collected only by removal from animal pasture and domestic ruminants...
2018: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29559146/babesia-microti-like-piroplasm-syn-babesia-vulpes-infection-in-red-foxes-vulpes-vulpes-in-nw-spain-galicia-and-its-relationship-with-ixodes-hexagonus
#20
Rocío Checa, Ana María López-Beceiro, Ana Montoya, Juan Pedro Barrera, Nieves Ortega, Rosa Gálvez, Valentina Marino, Julia González, Ángeles Sonia Olmeda, Luis Eusebio Fidalgo, Guadalupe Miró
Piroplasmosis is caused by several species of protozoa such as the Babesia microti-like piroplasm (Bml), an emerging blood protozoan also known as Theileria annae or Babesia vulpes. Infection by Bml was first reported in dogs in Spain where it is endemic today. Recently, a high prevalence of Bml has been increasingly detected in red foxes (Vulpes vulpes) in European countries. The objective of this study was to determine infection levels of this parasite in foxes from Galicia, NW Spain, and ticks species infestation in these carnivores, where they are so far unknown...
March 15, 2018: Veterinary Parasitology
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