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https://www.readbyqxmd.com/read/28346868/circulation-of-zoonotic-arboviruses-in-equine-populations-of-mallorca-island-spain
#1
Jessica Vanhomwegen, Cécile Beck, Philippe Desprès, Amanda Figuerola, Ramón García, Sylvie Lecollinet, Marc López-Roig, Jean-Claude Manuguerra, Jordi Serra-Cobo
The presence of major arbovirus vector species, climate change that promotes the expansion and increase of their populations, and potential animal reservoirs mean that vector-borne diseases represent a significant health risk for Mallorca's inhabitants. Microbiological monitoring of circulating arboviruses, particularly flaviviruses causing encephalitis, was initiated using domestic horses from localities near wetlands as "sentinel" hosts. A total of 291 blood samples were taken from 172 horses between 2011 and 2012, using paired samples to highlight seroconversion events...
March 27, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28344412/clinical-and-hematobiochemical-response-in-canine-monocytic-ehrlichiosis-seropositive-dogs-of-punjab
#2
Manasa R Kottadamane, Pritpal Singh Dhaliwal, Lachhman Das Singla, Baljinder Kumar Bansal, Sanjeev Kumar Uppal
AIM: As in India especially, the Punjab state sero-prevalence and distribution of ehrlichiosis in relation to clinico-hematobiochemical response remains largely unexplored. Thus, this study was designed to determine the prevalence of vector (tick)-borne tropical canine pancytopenia caused by Ehrlichia canis through enzyme labeled ImmunoComb(®) (IC) assay in dogs from in and around Ludhiana, Punjab. Correlation of prevalence was made with various clinico-hematobiochemical parameters. MATERIALS AND METHODS: Seroprevalence study was carried out using IC(®) test kit (Biogal, Galed Labs)...
February 2017: Veterinary World
https://www.readbyqxmd.com/read/28341533/epidemiology-of-infectious-encephalitis-causes-in-2016
#3
REVIEW
A Boucher, J L Herrmann, P Morand, R Buzelé, Y Crabol, J P Stahl, A Mailles
We performed a literature search in the Medline database, using the PubMed website. The incidence of presumably infectious encephalitis is estimated at 1.5-7 cases/100,000 inhabitants/year, excluding epidemics. Infectious encephalitis and immune-mediated encephalitis share similar clinical signs and symptoms. The latter accounts for a significant proportion of presumably infectious encephalitis cases without any established etiological diagnosis; as shown from a prospective cohort study where 21% of cases were due to an immune cause...
March 21, 2017: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/28340608/molecular-evidence-of-rickettsia-spp-in-ixodid-ticks-and-rodents-in-suburban-natural-and-rural-habitats-in-slovakia
#4
Lenka Minichová, Zuzana Hamšíková, Lenka Mahríková, Mirko Slovák, Elena Kocianová, Mária Kazimírová, Ľudovít Škultéty, Katarína Štefanidesová, Eva Špitalská
BACKGROUND: Natural foci of tick-borne spotted fever group (SFG) rickettsiae of public health concern have been found in Slovakia, but the role of rodents in their circulation is unclear. Ticks (Ixodes ricinus, Ixodes trianguliceps, Dermacentor marginatus, Dermacentor reticulatus, Haemaphysalis concinna and Haemaphysalis inermis) and tissues of rodents (Apodemus flavicollis, Apodemus sylvaticus, Myodes glareolus, Microtus arvalis, Microtus subterraneus and Micromys minutus) were examined for the presence of SFG rickettsiae and Coxiella burnetii by molecular methods...
March 24, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28337190/epidemiological-characteristics-and-environmental-risk-factors-of-severe-fever-with-thrombocytopenia-syndrome-in-hubei-province-china-from-2011-to-2016
#5
Tang Wang, Xin-Lou Li, Man Liu, Xiao-Jia Song, Hao Zhang, Yu-Bin Wang, Bao-Pin Tian, Xue-Sen Xing, Shi-Yue Li
Severe fever with thrombocytopenia syndrome (SFTS) is a tick-borne viral disease affecting hundreds of people in China each year. To better understand the epidemiological characteristics and environmental risk factors associated with the incidence of SFTS in Hubei Province, China, we conducted a retrospective epidemiological study and risk assessment of SFTS from 2011 to 2016. Although, the incidence and epidemic areas of SFTS are increasing, the fatality rate has decreased. Elderly farmers are the population most commonly infected with SFTS virus between May and July in the northeast Hubei Province, which seems to be consistent with local agricultural activities and the seasonal abundance of ticks...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28336423/comparative-analysis-of-complete-genome-sequences-of-european-subtype-tick-borne-encephalitis-virus-strains-isolated-from-ixodes-persulcatus-ticks-long-tailed-ground-squirrel-spermophilus-undulatus-and-human-blood-in-the-asian-part-of-russia
#6
T V Demina, S E Tkachev, I V Kozlova, E K Doroshchenko, O V Lisak, O V Suntsova, M M Verkhozina, Yu P Dzhioev, A I Paramonov, A Y Tikunov, N V Tikunova, V I Zlobin, D Ruzek
Tick-borne encephalitis virus (TBEV) is divided into three subtypes: European (TBEV-Eu), Siberian (TBEV-Sib), and Far Eastern (TBEV-FE) subtypes. The geographical range of TBEV-Eu dominates in Europe, but this subtype is present focally across the whole non-tropical forested Eurasian belt, through Russia to South Korea. However, the TBEV-Eu strains isolated outside Europe remain poorly characterized. In this study, full-genome sequences of eight TBEV-Eu isolates were determined. These strains were isolated from Ixodes persulcatus ticks, long-tailed ground squirrel (Spermophilus undulatus), and human blood in the natural foci of Western and Eastern Siberia, Russia...
March 9, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28336346/antiviral-activity-of-the-adenosine-analogue-bcx4430-against-west-nile-virus-and-tick-borne-flaviviruses
#7
Luděk Eyer, Darina Zouharová, Jana Širmarová, Martina Fojtíková, Michal Štefánik, Jan Haviernik, Radim Nencka, Erik de Clercq, Daniel Růžek
There are currently no approved antiviral therapies against medically important human flaviviruses. The imino-C-nucleoside BCX4430 shows broad-spectrum antiviral activity against a wide range of RNA viruses. Here, we demonstrate that BCX4430 inhibits tick-borne species of the genus Flavivirus; however, the antiviral effect varies against individual species. Micro-molar BCX4430 levels inhibited tick-borne encephalitis virus (TBEV); while, approximately 3-8-fold higher concentrations were needed to inhibit louping ill virus and Kyasanur Forest disease virus...
March 20, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28335825/canine-tick-borne-diseases-in-pet-dogs-from-romania
#8
Martin O Andersson, Conny Tolf, Paula Tamba, Mircea Stefanache, Jonas Waldenström, Gerhard Dobler, Lidia Chițimia-Dobler
BACKGROUND: Tick-borne diseases are of substantial concern worldwide for animals as well as humans. Dogs have been a human companion for millennia, and their significant impact on human life renders disease in dogs to be of great concern. Tick-borne diseases in dogs represent a substantial diagnostic challenge for veterinarians in that clinical signs are often diffuse and overlapping. In addition, co-infections with two or more pathogens enhance this problem further. Molecular methods are useful to disentangle co-infections and to accurately describe prevalence and geographical distribution of tick-borne diseases...
March 23, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28335329/nanoparticle-based-delivery-of-anaplasma-marginale-membrane-proteins-virb9-1-and-virb10-produced-in-the-pichia-pastoris-expression-system
#9
Bing Zhang, Antonio S Cavallaro, Karishma T Mody, Jun Zhang, James R Deringer, Wendy C Brown, Timothy J Mahony, Chengzhong Yu, Neena Mitter
Bovine anaplasmosis or cattle-tick fever is a tick-borne haemolytic disease caused by the rickettsial haemoparasite Anaplasma marginale in tropical and subtropical areas of the world. While difficult to express, the proteins VirB9-1 and VirB10 are immunogenic components of the outer membrane type IV secretion system that have been identified as candidate antigens for vaccines targeting of A. marginale. Soluble VirB9-1 and VirB10 were successfully expressed using Pichia pastoris. When formulated with the self-adjuvanting silica vesicles, SV-100 (diameter: 50 nm, and pore entrance size: 6 nm), 200 µg of VirB9-1 and VirB10 were adsorbed per milligram of nanoparticle...
November 5, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28333618/increasing-evidence-of-tick-borne-encephalitis-tbe-virus-transmission-the-netherlands-june-2016
#10
Adriaan Cg Weststrate, Daan Knapen, Gozewijn D Laverman, Bart Schot, Jan Jw Prick, Silke A Spit, Johan Reimerink, Barry Rockx, Felix Geeraedts
We present a case of endemic tick-borne encephalitis (TBE) occurring in June 2016 in the eastern part of the Netherlands in an area where a strain of TBE virus, genetically different from the common TBE virus strains in Europe, was reported in ticks in 2016. With the start of the tick season in spring, this second autochthonous Dutch TBE case should remind physicians to consider the possibility of endemic TBE in patients with respective symptoms.
March 16, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28331202/immune-evasion-of-borrelia-miyamotoi-cbia-a-novel-outer-surface-protein-exhibiting-complement-binding-and-inactivating-properties
#11
Florian Röttgerding, Alex Wagemakers, Joris Koetsveld, Volker Fingerle, Michael Kirschfink, Joppe W Hovius, Peter F Zipfel, Reinhard Wallich, Peter Kraiczy
Borrelia (B.) miyamotoi, an emerging tick-borne relapsing fever spirochete, resists complement-mediated killing. To decipher the molecular principles of immune evasion, we sought to identify determinants contributing to complement resistance. Employing bioinformatics, we identified a gene encoding for a putative Factor H-binding protein, termed CbiA (complement binding and inhibitory protein A). Functional analyses revealed that CbiA interacted with complement regulator Factor H (FH), C3, C3b, C4b, C5, and C9...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28331130/cytopenias-and-clonal-expansion-of-gamma-delta-t-cells-in-a-patient-with-anaplasmosis-a-potential-diagnostic-pitfall
#12
Daniel Marko, Anamarija M Perry, Arjuna Ponnampalam, Michel R Nasr
Human granulocytic anaplasmosis is a rare, tick-borne infectious disease caused by Anaplasma phagocytophilum. Herein, we report a rare case of human granulocytic anaplasmosis associated with cytopenias and clonal expansion of gamma/delta T-cells in the bone marrow. A 77-year old man presented multiple times to the emergency department complaining of muscle weakness. Complete blood count detected cytopenias and peripheral blood smear showed pseudo Pelger-Huet neutrophils. These findings prompted bone marrow evaluation with ancillary studies including flow cytometry, karyotyping and T-cell rearrangement studies...
2017: Journal of Clinical and Experimental Hematopathology: JCEH
https://www.readbyqxmd.com/read/28327690/kyasanur-forest-disease-kfd-rare-disease-of-zoonotic-origin
#13
M Muraleedharan
Kyasanur forest disease (KFD) is a rare tick borne zoonotic disease that causes acute febrile hemorrhagic illness in humans and monkeys especially in southern part of India. The disease is caused by highly pathogenic KFD virus (KFDV) which belongs to member of the genus Flavivirus and family Flaviviridae. The disease is transmitted to monkeys and humans by infective tick Haemaphysalisspinigera. Seasonal outbreaks are expected to occur during the months of January to June. The aim of this paper is to briefly summarize the epidemiology, mode of transmission of KFD virus, clinical findings, diagnosis, treatment, control and prevention of the disease...
September 2016: Journal of Nepal Health Research Council
https://www.readbyqxmd.com/read/28323557/seroprevalence-of-severe-fever-with-thrombocytopenia-syndrome-virus-in-hedgehog-from-china
#14
Yue Sun, Miao-Miao Liu, Li-Mei Luo, Li Zhao, Hong-Ling Wen, Zhen-Tang Zhang, Jian-Wei Liu, Zai-Feng Xue, Dong-Qiang Ma, Shu-Jun Ding, Xiao-Ying Lei, Xue-Jie Yu
Severe fever with thrombocytopenia syndrome, an emerging hemorrhagic fever, is caused by severe fever with thrombocytopenia syndrome virus (SFTSV), a tick-borne bunyavirus. Information regarding SFTSV animal hosts is very limited. In this study, we showed that 64% (9/14) of hedgehogs in Shandong Province, China were seropositive to SFTSV antibody, suggesting that hedgehog could be a vertebrate parasitifer for SFTSV.
March 21, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28322187/influence-of-genetic-background-on-hematologic-and-histopathologic-alterations-during-acute-granulocytic-anaplasmosis-in-129-svev-and-c57bl-6j-mice-lacking-type-i-and-type-ii-interferon-signaling
#15
Jennifer L Johns Marielle L Discipulo Amanda L Koehne Kaitlin A Moorhead And Claude M Nagamine
The role of host type I IFN signaling and its interaction with other immune pathways during bacterial infections is incompletelyunderstood. Type II IFN signaling plays a key role during numerous bacterial infections including granulocytic anaplasmosis (GA)caused by Anaplasma phagocytophilum infection. The function of combined type I and type II IFN signaling and their potentialsynergism during GA and similar tick-borne diseases is a topic of current research investigation. The goal of this study was toevaluate 2 mouse models of absent type I/type II IFN signaling in experimental A...
March 20, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28320144/magnetic-resonance-imaging-and-clinical-findings-in-adults-with-tick-borne-encephalitis
#16
Alexander Pichler, Johann Sellner, Gayane Harutyunyan, Astrid Sonnleitner, Daniela Sabine Klobassa, Juan-Jose Archelos-Garcia, Hannah Rock, Thomas Gattringer, Franz Fazekas
BACKGROUND: Magnetic resonance imaging (MRI) in tick-borne encephalitis (TBE) is often performed for differential diagnosis, but only a few reports on the morphologic changes in TBE patients and their relation to the disease severity exist. METHODS: We retrospectively searched for all TBE patients who were admitted to the Departments of Neurology of the Medical University of Graz (Austria) and the Paracelsus Medical University of Salzburg (Austria) between 2003 and 2014...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28319627/what-s-eating-you-lone-star-tick-amblyomma-americanum
#17
H Harris Reynolds, Dirk M Elston
Amblyomma americanum, also known as the lone star tick, is found in much of the eastern United States. Since the mid-20th century, the lone star tick has been implicated in human disease. Today, A americanum remains an important vector for tick-borne illness. In addition to others, species of Rickettsia, Ehrlichia, and Borrelia are all transmitted by the lone star tick. Recently described conditions such as Southern tick-associated rash illness and anaphylaxis to red meat following tick bites have been attributed to the lone star tick...
February 2017: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/28316419/comparison-between-conventional-and-molecular-methods-for-diagnosis-of-bovine-babesiosis-babesia-bovis-infection-in-tick-infested-cattle-in-upper-egypt
#18
Amira A T Al-Hosary
Ticks and tick-borne diseases are the main problems affecting the livestock production in Egypt. Bovine babesiosis has adverse effects on the animal health and production. A comparison of Giemsa stained blood smears, polymerase chain reaction (PCR) and nested PCR (nPCR) assays for detection of Babesia bovis infection in Egyptian Baladi cattle (Bos taurus) in reference to reverse line blot was carried out. The sensitivity of PCR and nested PCR (nPCR) assays were 65 and 100 % respectively. Giemsa stained blood smears showed the lowest sensitivity (30 %)...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28316015/expression-and-characterization-of-codon-optimized-crimean-congo-hemorrhagic-fever-virus-gn-glycoprotein-in-insect-cells
#19
Mehdi Rahpeyma, Alireza Samarbaf-Zadeh, Manoochehr Makvandi, Ata A Ghadiri, Stuart D Dowall, Fatemeh Fotouhi
Crimean-Congo hemorrhagic fever virus (CCHFV) is a major cause of tick-borne viral hemorrhagic disease in the world. Despite of its importance as a deadly pathogen, there is currently no licensed vaccine against CCHF disease. The attachment glycoprotein of CCHFV (Gn) is a potentially important target for protective antiviral immune responses. To characterize the expression of recombinant CCHFV Gn in an insect-cell-based system, we developed a gene expression system expressing the full-length coding sequence under a polyhedron promoter in Sf9 cells using recombinant baculovirus...
March 18, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28303129/there-is-a-method-to-the-madness-strategies-to-study-host-complement-evasion-by-lyme-disease-and-relapsing-fever-spirochetes
#20
REVIEW
Ashley L Marcinkiewicz, Peter Kraiczy, Yi-Pin Lin
Lyme disease and relapsing fever are caused by various Borrelia species. Lyme disease borreliae, the most common vector-borne pathogens in both the U.S. and Europe, are transmitted by Ixodes ticks and disseminate from the site of tick bites to tissues leading to erythema migrans skin rash, arthritis, carditis, and neuroborreliosis. Relapsing fever borreliae, carried by ticks and lice, trigger reoccurring fever episodes. Following transmission, spirochetes survive in the blood to induce bacteremia at the early stages of infection, which is thought to promote evasion of the host complement system...
2017: Frontiers in Microbiology
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