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https://www.readbyqxmd.com/read/28749289/clinical-disease-associated-with-anaplasma-phagocytophilum-infection-in-captive-przewalski-s-horses-equus-ferus-przewalskii
#1
Richard R Sim, Priscilla H Joyner, Luis R Padilla, Paul Anikis, Copper Aitken-Palmer
Anaplasma phagocytophilum is a tick-borne pathogen of domestic horses and the causative agent of equine granulocytic anaplasmosis. This case series describes three confirmed cases of clinical anaplasmosis, and a fourth case of presumptive anaplasmosis in Przewalski's horses ( Equus ferus przewalskii) housed at the Smithsonian Conservation Biology Institute from 2008 to 2014. Clinical signs varied among individuals with affected horses exhibiting lethargy, weakness, pyrexia, hypophagia, reluctance to move, or ataxia...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28747674/increased-prevalence-of-severe-fever-with-thrombocytopenia-syndrome-in-eastern-china-clustered-with-multiple-genotypes-and-reasserted-virus-during-2010-2015
#2
Zhifeng Li, Jianli Hu, Lunbiao Cui, Ye Hong, Jianwei Liu, Pengfei Li, Xiling Guo, Wendong Liu, Xiaochen Wang, Xian Qi, Bin Wu, Zhi Feng, Aihua Shen, Xuejian Liu, Hongjun Zhao, Wenwen Tan, Jiangang Zhou, Zheng Xing, Changjun Bao
Severe fever with thrombocytopenia syndrome (SFTS) is a novel tick-borne viral disease with high mortality. Since January 2010, we have conducted an epidemiological surveillance and etiological study of SFTS in Jiangsu and Anhui provinces. From January 2010 through December 2015, a total of 286 SFTS cases were confirmed in Jiangsu and Anhui provinces with a case fatality rate of 16.1%. The majority of confirmed SFTS cases were distributed in the border area of Jiangsu and Anhui provinces. Our findings suggest that the SFTS prevalence rate rose since 2010 and reached its highest in 2015...
July 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28742149/predicting-the-risk-of-lyme-borreliosis-after-a-tick-bite-using-a-structural-equation-model
#3
Agnetha Hofhuis, Jan van de Kassteele, Hein Sprong, Cees C van den Wijngaard, Margriet G Harms, Manoj Fonville, Arieke Docters van Leeuwen, Mariana Simões, Wilfrid van Pelt
BACKGROUND: Understanding and quantification of the risk of Lyme borreliosis after a tick bite can aid development of prevention strategies against Lyme borreliosis. METHODS: We used 3,525 single tick bite reports from three large prospective studies on the transmission risk of tick-borne pathogens to humans, with 50 reports of Lyme borreliosis during the follow-up period, among 1,973 reports with known outcome. A structural equation model was applied to estimate the risk of Lyme borreliosis after a tick bite, and quantify the influence of: developmental stage of the tick, detection of Borrelia burgdorferi s...
2017: PloS One
https://www.readbyqxmd.com/read/28741465/engineering-of-chimeric-protein-based-on-e-protein-domain-iii-of-tick-borne-encephalitis-virus-and-ompf-porin-of-yersinia-pseudotuberculosis
#4
Anna M Stenkova, Natalia S Chopenko, Ludmila A Davydova, Andrey N Mazeika, Evgeniya P Bystritskaya, Olga Y Portnyagina, Stanislav D Anastyuk, Dmitrii S Kulbatskii, Ekaterina N Lyukmanova, Dmitriy A Dolgikh, Eduard Y Kostetsky, Nina M Sanina
Tick-borne encephalitis poses a serious public health threat in the endemic regions. The disease treatment is restricted to symptomatic therapy, so great expectations are in the development of the prophylactic and therapeutic vaccines. The domain III of E protein of the tick-borne encephalitis virus is the main antigenic domain which includes virus-specific epitopes recognized by neutralizing antibodies. We have expressed, isolated and characterized the chimeric protein based on the fusion of domain III of E protein of the tick-borne encephalitis virus and bacterial porin OmpF from Yersinia pseudotuberculosis...
July 24, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28739494/amblyomma-maculatum-secis-binding-protein-2-and-putative-selenoprotein-p-are-indispensable-for-pathogen-replication-and-tick-fecundity
#5
Khemraj Budachetri, Gary Crispell, Shahid Karim
Selenium, a vital trace element, is incorporated into selenoproteins to produce selenocysteine. Our previous studies have revealed an adaptive co-evolutionary process that has enabled the spotted fever-causing tick-borne pathogen Rickettsia parkeri to survive by manipulating an antioxidant defense system associated with selenium, which includes a full set of selenoproteins and other antioxidants in ticks. Here, we conducted a systemic investigation of SECIS binding protein 2 (SBP2) and putative selenoprotein P (SELENOP) by transcript silencing in adult female Gulf-coast ticks (Amblyomma maculatum)...
July 21, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28739301/a-new-pcr-assay-for-the-detection-and-differentiation-of-babesia-canis-and-babesia-vogeli
#6
Giada Annoscia, Maria Stefania Latrofa, Cinzia Cantacessi, Emanuela Olivieri, Maria Teresa Manfredi, Filipe Dantas-Torres, Domenico Otranto
Babesia spp. are globally distributed tick-borne protozoan parasites that infect the red blood cells of a wide range of vertebrate hosts, including humans. Diagnosis of babesiosis is often impeded by the transient presence of the parasites in peripheral blood, as well as by their pleomorphic nature. Given the reports of an expanding and, in some cases, sympatric geographical distribution of Babesia canis and Babesia vogeli in dogs and associated vectors, in Europe, the development of time-efficient and cost-effective diagnostic tools to detect and differentiate these two species is warranted...
July 8, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28736753/combination-of-rt-pcr-and-proteomics-for-the-identification-of-crimean-congo-hemorrhagic-fever-virus-in-ticks
#7
Isabel G Fernández de Mera, Ilias Chaligiannis, Angélica Hernández-Jarguín, Margarita Villar, Lourdes Mateos-Hernández, Anna Papa, Smaragda Sotiraki, Francisco Ruiz-Fons, Alejandro Cabezas-Cruz, Christian Gortázar, José de la Fuente
Crimean-Congo hemorrhagic fever (CCHF) is an emerging tick-borne zoonotic disease caused by the CCHF virus (CCHFV). In this study, an experimental approach combining RT-PCR and proteomics was used for the identification and characterization of CCHFV in 106 ticks from 7 species that were collected from small ruminants in Greece. The methodological approach included an initial screening for CCHFV by RT-PCR followed by proteomics analysis of positive and control negative tick samples. This novel approach allowed the identification of CCHFV-positive ticks and provided additional information to corroborate the RT-PCR findings using a different approach...
July 2017: Heliyon
https://www.readbyqxmd.com/read/28730326/infectious-diseases-causing-autonomic-dysfunction
#8
REVIEW
Francisco Javier Carod Artal
OBJECTIVES: To review infectious diseases that may cause autonomic dysfunction. METHODS: Review of published papers indexed in medline/embase. RESULTS: Autonomic dysfunction has been reported in retrovirus (human immunodeficiency virus (HIV), human T-lymphotropic virus), herpes viruses, flavivirus, enterovirus 71 and lyssavirus infections. Autonomic dysfunction is relatively common in HIV-infected patients and heart rate variability is reduced even in early stages of infection...
July 20, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/28728938/didelphis-albiventris-naturally-infected-with-hepatozoon-canis-in-southeastern-brazil
#9
Maria Regina Lucas da Silva, Felipe Fornazari, Larissa de Castro Demoner, Carlos Roberto Teixeira, Helio Langoni, Lucia Helena O'Dwyer
Hepatozoon species are vector-borne pathogens that infect domestic and wild animals. Marsupials of the species Didelphis albiventris are adapted to urban and peri-urban areas and act as reservoir hosts for several parasites. The present study evaluated the occurrence of infection by Hepatozoon species in synantropic D. albiventris from Botucatu, São Paulo, Brazil. Blood samples and ectoparasites from 19 D. albiventris were collected from urban and peri-urban areas. Hepatozoon spp. detection was performed by microscopy and molecular analysis...
July 14, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28728557/the-impact-of-illegal-waste-sites-on-a-transmission-of-zoonotic-viruses
#10
Darja Duh, Sandra Hasic, Elena Buzan
BACKGROUND: Illegal waste disposal impacts public health and causes aesthetic and environmental pollution. Waste disposed in places without permitted and controlled facilities can provide a ready source of nutrition and shelter for rodents and thus promote the spread of their ecto- and endoparasites. The presence of two distinct zoonotic viruses, lymphocytic choriomeningitis virus (LCMV) and tick-borne encephalitis virus (TBEV), was searched at illegal waste sites. The aim of this study was to determine the prevalence of infection with both viruses in rodents and to discuss the virus-rodent relations in such environments...
July 20, 2017: Virology Journal
https://www.readbyqxmd.com/read/28727515/brave-new-worlds-the-expanding-universe-of-lyme-disease
#11
Brandee L Stone, Yvonne Tourand, Catherine A Brissette
Projections around the globe suggest an increase in tick-vectored disease incidence and distribution, and the potential for emergence of novel tick-borne pathogens. Lyme disease is the most common reported tick-borne illness in the Unites States and is prevalent throughout much of central Europe. In recent years, the worldwide burden of Lyme disease has increased and extended into regions and countries where the disease was not previously reported. In this review, we discuss the trends for increasing Lyme disease, and examine the factors driving Lyme disease expansion, including the effect of climate change on the spread of vector Ixodid ticks and reservoir hosts; and the impacts of increased awareness on disease reporting and diagnosis...
July 20, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28724731/cascading-effects-of-predator-activity-on-tick-borne-disease-risk
#12
Tim R Hofmeester, Patrick A Jansen, Hendrikus J Wijnen, Elena C Coipan, Manoj Fonville, Herbert H T Prins, Hein Sprong, Sipke E van Wieren
Predators and competitors of vertebrates can in theory reduce the density of infected nymphs (DIN)-an often-used measure of tick-borne disease risk-by lowering the density of reservoir-competent hosts and/or the tick burden on reservoir-competent hosts. We investigated this possible indirect effect of predators by comparing data from 20 forest plots across the Netherlands that varied in predator abundance. In each plot, we measured the density of questing Ixodes ricinus nymphs (DON), DIN for three pathogens, rodent density, the tick burden on rodents and the activity of mammalian predators...
July 26, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28722598/risk-factors-for-severe-infection-hospitalization-and-prolonged-antimicrobial-therapy-in-patients-with-babesiosis
#13
Neeharik Mareedu, Anna M Schotthoefer, Jason Tompkins, Matthew C Hall, Thomas R Fritsche, Holly M Frost
Babesiosis is an emerging tick-borne disease transmitted by the hard tick Ixodes scapularis, which also transmits Lyme disease. Better gradation of prognostic indicators are needed to determine which patients may develop serious complications requiring hospitalization, and to provide early guidance on appropriate therapy. In this study, we evaluated 128 patients with smear or real time polymerase chain reaction-confirmed Babesia microti infections over a period of 16 years. Patients with asplenia or immunocompromising conditions were more likely to have severe infection (P < 0...
July 10, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28719259/serosurvey-of-crimean-congo-hemorrhagic-fever-virus-in-cattle-mali-west-africa
#14
Ousmane Maiga, Miriam Andrada Sas, Kyle Rosenke, Badian Kamissoko, Marc Mertens, Nafomon Sogoba, Abdallah Traore, Modibo Sangare, Mamadou Niang, Tom G Schwan, Hamidou Moussa Maiga, Sekou F Traore, Heinz Feldmann, David Safronetz, Martin H Groschup
AbstractCrimean-Congo hemorrhagic fever is a tick-borne disease caused by the arbovirus Crimean-Congo hemorrhagic fever virus (CCHFV, family Bunyaviridae, genus Nairovirus). CCHFV can cause a severe hemorrhagic fever with high-case fatality rates in humans. CCHFV has a wide geographic range and has been described in around 30 countries in the Middle East, Asia, Europe, and Africa including Mali and neighboring countries. To date, little is known about the prevalence rates of CCHFV in Mali. Here, using banked bovine serum samples from across the country, we describe the results of a seroepidemiological study for CCHFV aimed at identifying regions of circulation in Mali...
June 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28714929/synchronous-langat-virus-infection-of-haemaphysalis-longicornis-using-anal-pore-microinjection
#15
Melbourne Rio Talactac, Kentaro Yoshii, Emmanuel Pacia Hernandez, Kodai Kusakisako, Remil Linggatong Galay, Kozo Fujisaki, Masami Mochizuki, Tetsuya Tanaka
The tick-borne encephalitis virus (TBEV) serocomplex of flaviviruses consists of arboviruses that cause important diseases in animals and humans. The transmission of this group of viruses is commonly associated with tick species such as Ixodes spp., Dermacentor spp., and Hyalomma spp. In the case of Haemaphysalis longicornis, the detection and isolation of flaviviruses have been previously reported. However, studies showing survival dynamics of any tick-borne flavivirus in H. longicornis are still lacking. In this study, an anal pore microinjection method was used to infect adult H...
July 17, 2017: Viruses
https://www.readbyqxmd.com/read/28714333/-borrelia-miyamotoi-a-recently-identified-human-pathogenic-tick-borne-relapsing-fever-spirochete
#16
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/28713778/tick-virus-interactions-toll-sensing
#17
Nicholas Johnson
Ticks are important vectors of viruses that infect and cause disease in man, livestock, and companion animals. The major focus of investigation of tick-borne viruses has been the interaction with the mammalian host, particularly the mechanisms underlying disease and the development of vaccines to prevent infection. Only recently has research begun to investigate the interaction of the virus with the tick host. This is striking when considering that the virus spends far more time infecting the tick vector relative to the vertebrate host...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28710265/francisella-like-endosymbionts-and-rickettsia-species-in-local-and-imported-hyalomma-ticks
#18
Tal Azagi, Eyal Klement, Gidon Perlman, Yaniv Lustig, Kosta Y Mumcuoglu, Dmitry Apanaskevich, Yuval Gottlieb
Hyalomma ticks (Acari: Ixodidae) are hosts for Francisella like endosymbionts (FLE) and may serve as vectors of zoonotic disease agents. This study was aimed to provide initial characterization of the interaction between Hyalomma and FLE and to determine the prevalence of pathogenic Rickettsia in these ticks. Hyalomma marginatum, H. rufipes, H. dromedarii, H. aegyptium and H. excavatum ticks, identified morphologically and molecularly, were collected from different hosts and locations, representing the genus distribution in Israel, as well as from migratory birds...
July 14, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28707219/a-stochastic-tick-borne-disease-model-exploring-the-probability-of-pathogen-persistence
#19
Milliward Maliyoni, Faraimunashe Chirove, Holly D Gaff, Keshlan S Govinder
We formulate and analyse a stochastic epidemic model for the transmission dynamics of a tick-borne disease in a single population using a continuous-time Markov chain approach. The stochastic model is based on an existing deterministic metapopulation tick-borne disease model. We compare the disease dynamics of the deterministic and stochastic models in order to determine the effect of randomness in tick-borne disease dynamics. The probability of disease extinction and that of a major outbreak are computed and approximated using the multitype Galton-Watson branching process and numerical simulations, respectively...
July 13, 2017: Bulletin of Mathematical Biology
https://www.readbyqxmd.com/read/28705248/prevention-of-feline-leishmaniosis-with-an-imidacloprid-10-flumethrin-4-5-polymer-matrix-collar
#20
Emanuele Brianti, Luigi Falsone, Ettore Napoli, Gabriella Gaglio, Salvatore Giannetto, Maria Grazia Pennisi, Vito Priolo, Maria Stefania Latrofa, Viviana Domenica Tarallo, Fabrizio Solari Basano, Roberto Nazzari, Katrin Deuster, Matthias Pollmeier, Laura Gulotta, Vito Colella, Filipe Dantas-Torres, Gioia Capelli, Domenico Otranto
BACKGROUND: Leishmaniosis caused by Leishmania infantum is one of the most important vector-borne diseases affecting animals and humans worldwide. Dogs are considered main reservoirs of the zoonotic forms, though in the last years the role of cats as reservoirs has been increasingly investigated. Feline leishmaniosis (FeL) occurs in endemic areas and no specific preventive measures have been investigated so far. In this study the efficacy of a 10% imidacloprid/4.5% flumethrin polymer matrix collar, licensed for tick and flea prevention, has been assessed against FeL in a longitudinal study on 204 privately owned cats from the Aeolian islands (Sicily), an area highly endemic for the disease...
July 14, 2017: Parasites & Vectors
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