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https://www.readbyqxmd.com/read/29774863/ehrlichia-muris-in-ixodes-cookei-ticks-northeastern-united-states-2016-2017
#1
Guang Xu, Patrick Pearson, Stephen M Rich
Ehrlichia muris is an agent of human ehrlichiosis. To determine its geographic spread in the United States, during 2016-2017, we tested 8,760 ticks from 45 states. A distinct clade of E. muris found in 3 Ixodes cookei ticks from the northeastern United States suggests transmission by these ticks in this region.
June 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29774838/rickettsia-parkeri-in-dermacentor-parumapertus-ticks-mexico
#2
Sokani Sánchez-Montes, Andrés M López-Pérez, Carmen Guzmán-Cornejo, Pablo Colunga-Salas, Ingeborg Becker, Jesús Delgado-de la Mora, Jesús D Licona-Enríquez, David Delgado-de la Mora, Sandor E Karpathy, Christopher D Paddock, Gerardo Suzán
During a study to identify zoonotic pathogens in northwestern Mexico, we detected the presence of a rickettsial agent in Dermacentor parumapertus ticks from black-tailed jackrabbits (Lepus californicus). Comparison of 4 gene sequences (gltA, htrA, ompA, and ompB) of this agent showed 99%-100% identity with sequences of Rickettsia parkeri.
June 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29774285/molecular-prevalence-of-babesia-bigemina-in-rhipicephalus-microplus-ticks-infesting-cross-bred-cattle-of-punjab-india
#3
S A Bhat, N K Singh, H Singh, S S Rath
Babesiosis is an economically important tick-borne apicomplexan protozoan disease of cattle in tropical and subtropical regions. In the present study, Rhipicephalus microplus engorged female ticks were collected from 135 apparently healthy cattle from different agro-climatic zones of Punjab, India, to investigate the carrier status of Babesia bigemina infection in vector tick by using microscopy and PCR based assays. PCR when applied on DNA extracted from the egg masses harvested from ticks showed 1.48% (2/135) samples as positive, whereas 4...
August 2017: Parasite Epidemiology and Control
https://www.readbyqxmd.com/read/29773336/seasonal-dynamics-geographical-range-size-hosts-genetic-diversity-and-phylogeography-of-amblyomma-sculptum-in-argentina
#4
Evelina L Tarragona, Patrick S Sebastian, María N Saracho Bottero, Emilia I Martinez, Valeria N Debárbora, Atilio J Mangold, Alberto A Guglielmone, Santiago Nava
The aim of this work was to generate knowledge on ecological aspects of Amblyomma sculptum in Argentina, such as seasonal dynamics, geographical range size, hosts, genetic diversity and phylogeography. Adult and immature A. sculptum ticks were collected in different localities of Argentina to know the geographical range size and hosts. The genetic diversity of this tick was studied through analyses of 16S rDNA sequences. To describe the seasonal dynamics, free-living ticks were monthly collected from October 2013 to October 2015...
April 27, 2018: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29773138/multiplex-hydrolysis-probe-assay-for-the-simultaneous-detection-of-theileria-equi-and-babesia-caballi-infections-in-equids
#5
Raksha V Bhoora, Ronel Pienaar, Frances Cornelius, Antoinette Josemans, Olivier Matthee, Ratselane Marumo, Christo Troskie, Ben J Mans
Quantitative real-time PCR assays previously developed for the detection of Theileria equi and Babesia caballi, were combined in a single multiplex TaqMan qPCR platform for the simultaneous detection of both heamoprotozoan parasites in equids. The multiplex equine piroplasmosis (M-EP) qPCR assay was shown to be efficient and specific. The detection limit was determined to be 1.4 × 10-4 % parasitized erythrocytes (PE) for T. equi and 2.8 × 10-4 % PE for B. caballi. The effect of differential DNA concentrations on the outcome of the M-EP qPCR for each target species was also investigated...
May 15, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29773129/in-vitro-acaricide-and-anticholinesterase-activities-of-digitaria-insularis-poaceae-against-rhipicephalus-boophilus-microplus
#6
Francianne Oliveira Santos, Hélimar Gonçalves Lima, Soraia de Souza Santa Rosa, Nayana Borges das Mercês, Taiane Menezes Serra, Rosângela Soares Uzeda, Isabella Mary Alves Reis, Mariana Borges Botura, Alexsandro Branco, Maria José Moreira Batatinha
Medicinal plants have been proposed as an alternative for acaricide control, aiming to develop lower-cost and eco-friendly ectoparasiticide products. The aim of this study was to evaluate the in vitro activity of the extracts and fractions obtained from the leaves of Digitaria insularis on the reproductive efficacy of the bovine tick Rhipicephalus (Boophilus) microplus. Also, we investigated the possible relation with the anticholinesterase mechanism. The effect of the crude hydroethanolic (CH), hexanic (HE), ethyl acetate (EA), butanolic (BT) and residual hydroethanolic (RH) extracts, as well as four fractions of HE, were evaluated using adult immersion test...
May 15, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29772883/development-of-the-first-georeferenced-map-of-rhipicephalus-boophilus-spp-in-mexico-from-1970-to-date-and-prediction-of-its-spatial-distribution
#7
Yazmin Alcala-Canto, Juan Antonio Figueroa-Castillo, Froylán Ibarra-Velarde, Yolanda Vera-Montenegro, María Eugenia Cervantes-Valencia, Abdelfattah Z M Salem, Jorge Alfredo Cuéllar-Ordaz
The tick genus Ripicephalus (Boophilus), particularly R. microplus, is one of the most important ectoparasites that affects livestock health and considered an epidemiological risk because it causes significant economic losses due, mainly, to restrictions in the export of infested animals to several countries. Its spatial distribution has been tied to environmental factors, mainly warm temperatures and high relative humidity. In this work, we integrated a dataset consisting of 5843 records of Rhipicephalus spp...
May 7, 2018: Geospatial Health
https://www.readbyqxmd.com/read/29772759/human-babesiosis-caused-by-babesia-duncani-has-widespread-distribution-across-canada
#8
John D Scott, Catherine M Scott
Human babesiosis caused by Babesia duncani is an emerging infectious disease in Canada. This malaria-like illness is brought about by a protozoan parasite infecting red blood cells. Currently, controversy surrounds which tick species are vectors of B. duncani. Since the availability of a serological or molecular test in Canada for B. duncani has been limited, we conducted a seven-year surveillance study (2011⁻2017) to ascertain the occurrence and geographic distribution of B. duncani infection country-wide...
May 17, 2018: Healthcare (Basel, Switzerland)
https://www.readbyqxmd.com/read/29771344/prevalence-of-rickettsia-species-rickettsiales-rickettsiaceae-in-dermacentor-variabilis-ticks-acari-ixodidae-in-north-carolina
#9
Madhavi L Kakumanu, Loganathan Ponnusamy, Haley Sutton, Steven R Meshnick, William L Nicholson, Charles S Apperson
The American dog tick, Dermacentor variabilis (Say), is a vector of spotted fever group (SFG) rickettsiae, including Rickettsia rickettsii the causative organism of Rocky Mountain spotted fever (RMSF). In North Carolina, SFG rickettsioses (including RMSF) are a leading cause of tick-borne illness. Knowledge of the infection rate and geographic distribution of D. variabilis ticks infected with Rickettsia spp. provides information on the spatial distribution of public health risk. Accordingly, we extracted genomic DNA from adult D...
May 16, 2018: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29770944/analysis-of-pastoralists-perception-on-challenges-and-opportunities-for-sheep-and-goat-production-in-northern-kenya
#10
Mohamed Haji Abdilatif, Joshua Orungo Onono, Florence Kanini Mutua
Small ruminants' production contributes to livelihood of pastoral communities, but this faces myriad constraints. This study aimed at identifying challenges facing producers of small ruminants, prioritizing diseases and their control measures and documenting opportunities for improvement. Sixteen focus group discussions with livestock owners and 13 key informant interviews were done in selected areas in Mandera County, Northern Kenya, and both quantitative and qualitative data collected using a questionnaire guide...
May 16, 2018: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29770229/sensitivity-of-different-cattle-breeds-to-the-infestation-of-cattle-ticks-amblyomma-variegatum-rhipicephalus-microplus-and-hyalomma-spp-on-the-natural-pastures-of-opkara-farm-benin
#11
Roland Eric Yessinou, Camus Adoligbe, Yao Akpo, Justin Adinci, Issaka Youssao Abdou Karim, Souaïbou Farougou
A study was carried out on the Opkara (Benin) cattle farm on 64 cattle of four different breeds (16 individuals per breed) from June to December 2016. During this study, three tick species were found in different numbers, Amblyomma variegatum (732), Rhipicephalus microplus (8079), and Hyalomma spp. (208), with parasitic intensity of 11.90, 126.23, and 3.25, respectively. The interracial comparison of the tick infestation between the cattle showed a significant difference ( P < 0.001). However, Girolando was more infested than all the cattle breeds...
2018: Journal of Parasitology Research
https://www.readbyqxmd.com/read/29770045/surveillance-for-lyme-disease-in-canada-2009-2015
#12
S Gasmi, N H Ogden, L R Lindsay, S Burns, S Fleming, J Badcock, S Hanan, C Gaulin, M A Leblanc, C Russell, M Nelder, L Hobbs, S Graham-Derham, L Lachance, A N Scott, E Galanis, J K Koffi
Objective: To summarize seven years of surveillance data for Lyme disease cases reported in Canada from 2009 to 2015. Methods: We describe the incidence over time, seasonal and geographic distribution, demographic and clinical characteristics of reported Lyme disease cases. Logistic regression was used to explore differences between age groups, sex and year to better understand potential demographic risk factors for the occurrence of Lyme disease. Results: The number of reported Lyme disease cases increased more than six-fold, from 144 in 2009 to 917 in 2015, mainly due to an increase in infections acquired in Canada...
October 5, 2017: Canada Communicable Disease Report, Relevé des Maladies Transmissibles Au Canada
https://www.readbyqxmd.com/read/29769364/what-explains-tick-proliferation-following-large-herbivore-exclusion
#13
Georgia Titcomb, Robert M Pringle, Todd M Palmer, Hillary S Young
No abstract text is available yet for this article.
May 16, 2018: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29769359/study-scale-determines-whether-wildlife-loss-protects-against-or-promotes-tick-borne-disease
#14
J C Buck, S E Perkins
No abstract text is available yet for this article.
May 16, 2018: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29769356/comment-on-titcomb-et-al-s-interacting-effects-of-wildlife-loss-and-climate-on-ticks-and-tick-borne-disease
#15
H J Esser, N A Hartemink, W F de Boer
No abstract text is available yet for this article.
May 16, 2018: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29768482/sequencing-of-complete-mitochondrial-genomes-confirms-synonymization-of-hyalomma-asiaticum-asiaticum-and-kozlovi-and-advances-phylogenetic-hypotheses-for-the-ixodidae
#16
Zhi-Qiang Liu, Yan-Feng Liu, Nuer Kuermanali, Deng-Feng Wang, Shi-Jun Chen, Hui-Ling Guo, Li Zhao, Jun-Wei Wang, Tao Han, Yuan-Zhi Wang, Jie Wang, Chen-Feng Shen, Zhuang-Zhi Zhang, Chuang-Fu Chen
Phylogeny of hard ticks (Ixodidae) remains unresolved. Mitochondrial genomes (mitogenomes) are increasingly used to resolve phylogenetic controversies, but remain unavailable for the entire large Hyalomma genus. Hyalomma asiaticum is a parasitic tick distributed throughout the Asia. As a result of great morphological variability, two subspecies have been recognised historically; until a morphological data-based synonymization was proposed. However, this hypothesis was never tested using molecular data. Therefore, objectives of this study were to: 1...
2018: PloS One
https://www.readbyqxmd.com/read/29766270/parasitological-and-molecular-diagnostic-of-a-clinical-babesia-caballi-outbreak-in-southern-romania
#17
Mariana Ionita, Isabela Madalina Nicorescu, Kurt Pfister, Ioan Liviu Mitrea
Equine piroplasmosis (EP) is a tick-borne disease of equids caused by Babesia caballi and/or Theileria equi, which is endemic in many tropical and temperate areas of the world. However, clinical outbreaks of EP in Romania during the last decades have not been reported Therefore, the aim of this paper is (i) to describe a clinical B. caballi outbreak in horses on several farms in Southern Romania using a diagnostic and therapeutic approach and (ii) the molecular diagnostic of EP in an endemic area of Romania...
May 15, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29764730/molecular-detection-of-the-human-pathogen-rickettsia-parkeri-strain-atlantic-rainforest-in-amblyomma-ovale-ticks-in-argentina
#18
Daniela Lamattina, Evelina Luisa Tarragona, Santiago Nava
Human rickettsioses caused by Rickettsia parkeri strain Atlantic rainforest in Brazil motivated the analysis of Amblyomma ovale ticks in Misiones province, a similar ecological region in northeastern Argentina. During 2010-2017, 393 A. ovale ticks were collected from domestic and wild animals and from vegetation, and 177 were pooled for rickettsial detection by PCR targeting the gltA, ompA and ompB genes. A sample consisting of a pool of two A. ovale adults collected on Nasua nasua was positive for Rickettsia parkeri strain Atlantic rainforest...
May 5, 2018: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29763485/what-s-eating-you-ixodes-tick-and-related-diseases-part-2-diagnosis-and-treatment-of-regional-tick-borne-diseases
#19
Kelsey D Wilson, Dirk M Elston
The Ixodes tick is an important arthropod vector in the transmission of human disease. Although Lyme disease is the most prevalent zoonosis transmitted by Ixodes ticks, other less common diseases may be encountered, including human granulocytic anaplasmosis, babesiosis, Powassan virus infection, tick-borne encephalitis, Borrelia miyamotoi disease, and tick paralysis. In part 2 of this review, disease presentation, diagnosis, and treatment of these less commonly encountered tick-borne diseases are discussed.
April 2018: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/29762747/detection-of-babesia-spp-in-dogs-and-their-ticks-from-peninsular-malaysia-emphasis-on-babesia-gibsoni-and-babesia-vogeli-infections-in-rhipicephalus-sanguineus-sensu-lato-acari-ixodidae
#20
Batah Kunalan Prakash, Van Lun Low, Wei Yin Vinnie-Siow, Tiong Kai Tan, Yvonne Ai-Lian Lim, Akhavan Rezaei Morvarid, Sazaly AbuBakar, Mohd Sofian-Azirun
Canine babesiosis is an emerging tick-borne disease with a worldwide distribution, including Malaysia. While the prevalence of Babesia has been documented from dogs in Malaysia, occurrence of Babesia has been relatively little studied in their tick vectors. Accordingly, a total of 240 dogs and 140 Rhipicephalus sanguineus sensu lato (s.l.) (Acari: Ixodidae) ticks from Malaysia were molecularly screened for the presence of Babesia protozoa in the present study. Babesia gibsoni was only detected in ticks (1.4%), whereas Babesia vogeli was detected in both ticks (1...
May 12, 2018: Journal of Medical Entomology
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