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https://www.readbyqxmd.com/read/28103209/west-nile-virus-and-other-nationally-notifiable-arboviral-diseases-united-states-2015
#1
Elisabeth Krow-Lucal, Nicole P Lindsey, Jennifer Lehman, Marc Fischer, J Erin Staples
Arthropod-borne viruses (arboviruses) are transmitted to humans primarily through the bites of infected mosquitoes and ticks. The leading cause of domestically acquired arboviral disease in the United States is West Nile virus (WNV) (1). Other arboviruses, including La Crosse, St. Louis encephalitis, Jamestown Canyon, Powassan, and eastern equine encephalitis viruses, also cause sporadic cases and outbreaks. This report summarizes surveillance data reported to CDC in 2015 for nationally notifiable arboviruses...
January 20, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28099817/applying-proteomics-to-tick-vaccine-development-where-are-we
#2
Margarita Villar, Anabel Marina, José de la Fuente
Ticks are second to mosquitoes as a vector of human diseases and are the first vector of animal diseases with a great impact on livestock farming. Tick vaccines represent a sustainable and effective alternative to chemical acaricides for the control of tick infestations and transmitted pathogens. The application of proteomics to tick vaccine development is a fairly recent area, which has resulted in the characterization of some tick-host-pathogen interactions and the identification of candidate protective antigens...
January 18, 2017: Expert Review of Proteomics
https://www.readbyqxmd.com/read/28095423/influences-of-host-community-characteristics-on-borrelia-burgdorferi-infection-prevalence-in-blacklegged-ticks
#3
Holly B Vuong, Grace S Chiu, Peter E Smouse, Dina M Fonseca, Dustin Brisson, Peter J Morin, Richard S Ostfeld
Lyme disease is a major vector-borne bacterial disease in the USA. The disease is caused by Borrelia burgdorferi, and transmitted among hosts and humans, primarily by blacklegged ticks (Ixodes scapularis). The ~25 B. burgdorferi genotypes, based on genotypic variation of their outer surface protein C (ospC), can be phenotypically separated as strains that primarily cause human diseases-human invasive strains (HIS)-or those that rarely do. Additionally, the genotypes are non-randomly associated with host species...
2017: PloS One
https://www.readbyqxmd.com/read/28089780/co-feeding-transmission-facilitates-strain-coexistence-in-borrelia-burgdorferi-the-lyme-disease-agent
#4
S L States, C I Huang, S Davis, D M Tufts, M A Diuk-Wasser
Coexistence of multiple tick-borne pathogens or strains is common in natural hosts and can be facilitated by resource partitioning of the host species, within-host localization, or by different transmission pathways. Most vector-borne pathogens are transmitted horizontally via systemic host infection, but transmission may occur in the absence of systemic infection between two vectors feeding in close proximity, enabling pathogens to minimize competition and escape the host immune response. In a laboratory study, we demonstrated that co-feeding transmission can occur for a rapidly-cleared strain of Borrelia burgdorferi, the Lyme disease agent, between two stages of the tick vector Ixodes scapularis while feeding on their dominant host, Peromyscus leucopus...
December 26, 2016: Epidemics
https://www.readbyqxmd.com/read/28089651/canine-tick-borne-pathogens-in-cyprus-and-a-unique-canine-case-of-multiple-co-infections
#5
Charalampos Attipa, Chelsea A E Hicks, Emily N Barker, Vasiliki Christodoulou, Kyriaki Neofytou, Mathios E Mylonakis, Victoria I Siarkou, Elpida I Vingopoulou, Francesca Soutter, Dimosthenis Chochlakis, Anna Psaroulaki, Kostas Papasouliotis, Séverine Tasker
Canine tick-borne pathogens such as Ehrlichia canis and Hepatozoon canis are widespread in the Mediterranean basin but have never been reported or investigated in Cyprus. We describe herein the presence of canine tick-borne pathogens in three dogs with clinical signs compatible with vector-borne diseases from Paphos area of Cyprus. Molecular and phylogenetic analysis revealed the presence of E. canis, Anaplasma platys, H. canis, Babesia vogeli and Mycoplasma haemocanis in Cyprus. One dog co-infected with E...
December 26, 2016: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28089123/ticks-and-borrelia-in-urban-and-peri-urban-green-space-habitats-in-a-city-in-southern-england
#6
Kayleigh M Hansford, Manoj Fonville, Emma L Gillingham, Elena Claudia Coipan, Maaike E Pietzsch, Aleksandra I Krawczyk, Alexander G C Vaux, Benjamin Cull, Hein Sprong, Jolyon M Medlock
Ticks are becoming increasingly recognised as important vectors of pathogens in urban and peri-urban areas, including green space used for recreational activities. In the UK, the risk posed by ticks in such areas is largely unknown. In order to begin to assess the risk of ticks in urban/peri-urban areas in southern England, questing ticks were collected from five different habitat types (grassland, hedge, park, woodland and woodland edge) in a city during the spring, summer and autumn of 2013/2014 and screened for Borrelia burgdorferi sensu lato...
December 21, 2016: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28088177/a-novel-quantitative-pcr-detects-babesia-infection-in-patients-not-identified-by-currently-available-non-nucleic-acid-amplification-tests
#7
Lavoisier Akoolo, Samantha Schlachter, Rasel Khan, Laura Alter, Albert D Rojtman, Kristine Gedroic, Purnima Bhanot, Nikhat Parveen
BACKGROUND: Ticks transmit Babesia microti, the causative agents of babesiosis in North America and Europe. Babesiosis is now endemic in Northeastern USA and affects people of all ages. Babesia species infect erythrocytes and can be transmitted through blood transfusion. Whole blood and blood products, which are not tested for Babesia, can cause transfusion-transmitted babesiosis (TTB) resulting in severe consequences in the immuno-compromised patients. The purpose of this study was epidemiological evaluation of babesiosis in a tick-infested state...
January 14, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28074976/utility-of-urinary-markers-in-the-assessment-of-renal-dysfunction-in-canine-babesiosis
#8
Dagmara Winiarczyk, Łukasz Adaszek, Michał Bartnicki, Beata Abramowicz, Paweł Łyp, Jacek Madany, Stanisław Winiarczyk
OBJECTIVE: Canine babesiosis is a common and clinically significant tick-borne disease caused by haemoprotozoan parasites of the genus Babesia. Acute renal failure is considered to be one of the most prevalent complications of canine babesiosis. This complication leads to a decrease in the glomerular filtration rate and in consequence causes azotemia and uremia. The objective of this study was to assess the localization and extent of renal damage in dogs infected with Babesia canis using an urinary marker for glomerular (urinary immunoglobulin G, uIgG), proximal tubular dysfunction (urinary retinol binding protein, uRBP) and distal tubular dysfunction (urinary Tamm-Horsfal protein, uTHP)...
January 11, 2017: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
https://www.readbyqxmd.com/read/28073909/the-detection-of-spotted-fever-group-rickettsia-dna-in-tick-samples-from-pastoral-communities-in-kenya
#9
Hellen Koka, Rosemary Sang, Helen Lydia Kutima, Lillian Musila
In this study, ticks from pastoral communities in Kenya were tested for Rickettsia spp. infections in geographical regions where the presence of tick-borne arboviruses had previously been reported. Rickettsial and arbovirus infections have similar clinical features which makes differential diagnosis challenging when both diseases occur. The tick samples were tested for Rickettsia spp. by conventional PCR using three primer sets targeting the gltA, ompA, and ompB genes followed by amplicon sequencing. Of the tick pools screened, 25% (95/380) were positive for Rickettsia spp...
January 10, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28072517/arthropod-innate-immune-systems-and-vector-borne-diseases
#10
Richard H G Baxter, Alicia Contet, Kathryn Krueger
Arthropods, especially ticks and mosquitoes, are the vectors for a number of parasitic and viral human diseases including malaria, sleeping sickness, Dengue and Zika. Yet arthropods show tremendous individual variation in their capacity to transmit disease. A key factor in this capacity is genetically encoded immune factors that counteract infection by the pathogen. Arthropod-specific pattern recognition receptors and protease cascades detect and respond to infection. Proteins such as antimicrobial peptides, thioester-containing proteins, and transglutaminases effect responses such as lysis, phagocytosis, melanization and agglutination...
January 10, 2017: Biochemistry
https://www.readbyqxmd.com/read/28069471/an-unexpected-fatal-cchf-case-and-management-of-exposed-health-care-workers
#11
Goksel Guven, Leyla Talan, Neriman Defne Altintaş, Kemal Osman Memikoglu, Fugen Yoruk, Alpay Azap
Crimean-Congo hemorrhagic fever (CCHF) is a tick borne viral disease which can also be transmitted by direct contact with blood or tissue specimens of infected animals or humans. We present a fatal case of CCHF, who was diagnosed after death, and describe the post-exposure management plan for the health care workers (HCWs) involved in her care. In total of 52 HCWs were involved in the patient's care and they were stratified into risk groups. Overall, 20 HCWs were grouped in high and intermediate risk groups, including the HCW with needle stick injury...
January 6, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28069059/molecular-detection-of-rickettsia-species-in-ticks-collected-from-the-southwestern-provinces-of-the-republic-of-korea
#12
Yoontae Noh, Yeong Seon Lee, Heung-Chul Kim, Sung-Tae Chong, Terry A Klein, Ju Jiang, Allen L Richards, Hae Kyeong Lee, Su Yeon Kim
BACKGROUND: Rickettsiae constitute a group of arthropod-borne, Gram-negative, obligate intracellular bacteria that are the causative agents of diseases ranging from mild to life threatening that impact on medical and veterinary health worldwide. METHODS: A total of 6,484 ticks were collected by tick drag from June-October 2013 in the southwestern provinces of the Republic of Korea (ROK) (Jeollanam, n = 3,995; Jeollabuk, n = 680; Chungcheongnam, n = 1,478; and Chungcheongbuk, n = 331)...
January 10, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28057731/extremely-low-genomic-diversity-of-rickettsia-japonica-distributed-in-japan
#13
Arzuba Akter, Tadasuke Ooka, Yasuhiro Gotoh, Seigo Yamamoto, Hiromi Fujita, Fumio Terasoma, Kouji Kida, Masakatsu Taira, Fumiko Nakadouzono, Mutsuyo Gokuden, Manabu Hirano, Mamoru Miyashiro, Kouichi Inari, Yukie Shimazu, Kenji Tabara, Atsushi Toyoda, Dai Yoshimura, Takehiko Itoh, Tomokazu Kitano, Mitsuhiko P Sato, Keisuke Katsura, Shakhinur Islam Mondal, Yoshitoshi Ogura, Shuji Ando, Tetsuya Hayashi
Rickettsiae are obligate intracellular bacteria that have small genomes as a result of reductive evolution. Many Rickettsia species of the spotted fever group (SFG) cause tick-borne diseases known as "spotted fevers." The life cycle of SFG rickettsiae is closely associated with that of the tick, which is generally thought to act as a bacterial vector and reservoir that maintains the bacterium through transstadial and transovarial transmission. Each SFG member is thought to have adapted to a specific tick species, thus restricting the bacterial distribution to a relatively limited geographic region...
January 4, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28057067/lyme-disease-risk-in-southern-california-abiotic-and-environmental-drivers-of-ixodes-pacificus-acari-ixodidae-density-and-infection-prevalence-with-borrelia-burgdorferi
#14
Andrew J MacDonald, David W Hyon, John B Brewington, Kerry E O'Connor, Andrea Swei, Cheryl J Briggs
BACKGROUND: Tick-borne diseases, particularly Lyme disease, are emerging across the northern hemisphere. In order to manage emerging diseases and predict where emergence will likely occur, it is necessary to understand the factors influencing the distribution, abundance and infection prevalence of vector species. In North America, Lyme disease is the most common vector-borne disease and is transmitted by blacklegged ticks. This study aimed to explore the abiotic and environmental drivers of density and infection prevalence of western blacklegged ticks (Ixodes pacificus) in southern California, an understudied and densely populated region of North America...
January 5, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28055579/guidelines-for-the-direct-detection-of-anaplasma-spp-in-diagnosis-and-epidemiological-studies
#15
Cornelia Silaghi, Ana Sofia Santos, Jacinto Gomes, Iva Christova, Ioana Adriana Matei, Gernot Walder, Ana Domingos, Lesley Bell-Sakyi, Hein Sprong, Friederike D von Loewenich, José A Oteo, José de la Fuente, J Stephen Dumler
The genus Anaplasma (Rickettsiales: Anaplasmataceae) comprises obligate intracellular Gram-negative bacteria that are mainly transmitted by ticks, and currently includes six species: Anaplasma bovis, Anaplasma centrale, Anaplasma marginale, Anaplasma phagocytophilum, Anaplasma platys, and Anaplasma ovis. These have long been known as etiological agents of veterinary diseases that affect domestic and wild animals worldwide. A zoonotic role has been recognized for A. phagocytophilum, but other species can also be pathogenic for humans...
January 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28055518/rocky-mountain-spotted-fever
#16
Jennan Phillips
The tick-borne disease Rocky Mountain spotted fever (RMSF) can have deadly outcomes unless treated appropriately, yet nonspecific flu-like symptoms complicate diagnosis. Occupational health nurses must have a high index of suspicion with symptomatic workers and recognize that recent recreational or occupational activities with potential tick exposure may suggest RMSF.
January 2017: Workplace Health & Safety
https://www.readbyqxmd.com/read/28054180/status-of-babesiosis-among-domestic-herbivores-in-iran-a-systematic-review-and-meta-analysis
#17
REVIEW
Mousa Motavalli Haghi, Fariborz Etemadifar, Mahdi Fakhar, Saeed Hosseini Teshnizi, Masoud Soosaraei, Azar Shokri, Atta Hajihasani, Hamed Mashhadi
Babesiosis is a protozoal disease caused by Babesia spp. in mammals and humans worldwide. It is one of the most important tick-borne diseases, which affects livestock productions, reproductions, and accordingly failing economy. In this, systematic review and meta-analysis, study, the prevalence of babesiosis among domestic herbivores in Iran, between 1998 and 2015, was methodically reviewed. Nine databases including five English and four Persian databases were explored. A total of 49 articles, as regards the examination of 13,547 sheep, 1920 goats, 7167 cattle, and 940 horses, corresponding to prevalence of babesiosis from different regions of Iran were gathered for our qualifying criteria...
January 4, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28051192/global-warming-and-its-health-impact
#18
Antonella Rossati
Since the mid-19th century, human activities have increased greenhouse gases such as carbon dioxide, methane, and nitrous oxide in the Earth's atmosphere that resulted in increased average temperature. The effects of rising temperature include soil degradation, loss of productivity of agricultural land, desertification, loss of biodiversity, degradation of ecosystems, reduced fresh-water resources, acidification of the oceans, and the disruption and depletion of stratospheric ozone. All these have an impact on human health, causing non-communicable diseases such as injuries during natural disasters, malnutrition during famine, and increased mortality during heat waves due to complications in chronically ill patients...
January 2017: International Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28043394/first-documentation-of-ivermectin-resistance-in-rhipicephalus-sanguineus-sensu-lato-acari-ixodidae
#19
R I Rodriguez-Vivas, M M Ojeda-Chi, I Trinidad-Martinez, A A Pérez de León
: The brown dog tick, Rhipicephalus sanguineus sensu lato (Latreille, 1806), is an ectoparasite and disease vector of significant veterinary and public health importance that is distributed widely around the world. The intensive use of synthetic acaricides for tick control exerts a strong selective pressure for brown dog ticks to become resistant to them. Here, we investigated claims from the field regarding treatment failure associated with the use of veterinary products containing ivermectin (IVM) to control brown dog ticks infesting dogs in Yucatan state, Mexico...
January 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28035113/serological-surveillance-of-vector-borne-and-zoonotic-diseases-among-hunters-in-eastern-poland
#20
Małgorzata Tokarska-Rodak, Dorota Plewik, Aleksander J Michalski, Marcin Kołodziej, Alicja Mełgieś, Anna Pańczuk, Henryk Konon, Marcin Niemcewicz
BACKGROUND & OBJECTIVES: Many etiological agents of zoonoses are considered as significant biological hazard to people visiting forested areas frequently, for instance, hunters. They may be exposed to ticks, rodents, and birds as well as excreta/secretions of wild animals or contaminated water and soil. Hence, this population is at risk of contracting infection with pathogens such as Borrelia burgdorferi sensu lato (s.l.), Anaplasma phagocytophilum, Babesia spp., tick-borne encephalitis virus, Bartonella spp...
October 2016: Journal of Vector Borne Diseases
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