Read by QxMD icon Read


Eyal Meltzer, Yael Paran, Yaniv Lustig, Shmuel Stienlauf, Miriam Weinberger, Eli Schwartz
During 2006-2014, four tick-borne encephalitis (TBE) cases occurred among Israeli travelers. We calculated TBE incidence at 321.0, 45.0, 13.2, and 7.5 cases/100,000 travelers/year of travel to Sweden, Switzerland, Austria, and Germany, respectively. TBE incidence among travelers to these destinations appears to justify TBE vaccination in accordance with World Health Organization recommendations.
January 15, 2017: Emerging Infectious Diseases
Gianne Eduard L Ulanday, Satoshi Shimada, Ngwe Tun Mya Myat, Takeshi Nabeshima, Kouichi Morita, Daisuke Hayasaka
BACKGROUND: Ticks have been long known as vectors of various pathogens, some of which can cause high fatality rates among infected individuals. Our enhanced tick surveillance around Nagasaki, Japan, led to the isolation and identification of a new strain of a recently identified Orbivirus, Muko virus (MUV). The orbiviruses have a wide host range, including humans, and is related to a spectrum of clinical outcomes. However, the zoonotic potential of some members of the genus, although reported, were not clearly elucidated...
2016: Tropical Medicine and Health
Richard Lindqvist, Filip Mundt, Jonathan D Gilthorpe, Silke Wölfel, Nelson O Gekara, Andrea Kröger, Anna K Överby
BACKGROUND: Neurotropic flaviviruses such as tick-borne encephalitis virus (TBEV), Japanese encephalitis virus (JEV), West Nile virus (WNV), and Zika virus (ZIKV) are causative agents of severe brain-related diseases including meningitis, encephalitis, and microcephaly. We have previously shown that local type I interferon response within the central nervous system (CNS) is involved in the protection of mice against tick-borne flavivirus infection. However, the cells responsible for mounting this protective response are not defined...
October 24, 2016: Journal of Neuroinflammation
Han Xia, Andrew S Beck, Aysen Gargili, Naomi Forrester, Alan D T Barrett, Dennis A Bente
The trade-off hypothesis, the current paradigm of arbovirus evolution, proposes that cycling between vertebrate and invertebrate hosts presents significant constraints on genetic change of arboviruses. Studying these constraints in mosquito-borne viruses has led to a new understanding of epizootics. The trade-off hypothesis is assumed to be applicable to tick-borne viruses too, although studies are lacking. Tick-borne Crimean-Congo hemorrhagic fever virus (CCHFV), a member of the family Bunyaviridae, is a major cause of severe human disease worldwide and shows an extraordinary amount of genetic diversity compared to other arboviruses, which has been linked to increased virulence and emergence in new environments...
October 24, 2016: Scientific Reports
J K Lee, G M Moraru, J V Stokes, R W Wills, E Mitchell, E Unz, B Moore-Henderson, A B Harper, A S Varela-Stokes
Amblyomma maculatum Koch (Acari: Ixodidae), the primary vector for Rickettsia parkeri, may also be infected with a rickettsia of unknown pathogenicity, "Candidatus Rickettsia andeanae." Infection rates with these rickettsiae vary geographically, and coinfected ticks have been reported. In this study, infection rates of R. parkeri and "Ca R. andeanae" were evaluated, and rickettsial DNA levels quantified, in 335 questing adult A. maculatum collected in 2013 (n = 95), 2014 (n = 139), and 2015 (n = 101) from Oktibbeha County, MS...
October 22, 2016: Journal of Medical Entomology
Bruce H Noden, Scott R Loss, Courtney Maichak, Faithful Williams
The prevalence of tick-borne diseases has increased dramatically in many urban areas of the U.S., yet little is known about the ecology of ticks and tick-borne pathogens in relation to characteristics of North American urban and suburban landscapes. This study aimed to begin identification of the risk of encountering ticks and tick-borne pathogens within a rapidly expanding metropolitan area in the U.S. Great Plains region. Ten sites across Oklahoma City, Oklahoma were selected for tick sampling based on presence of tick habitat and level of urbanization intensity...
October 14, 2016: Ticks and Tick-borne Diseases
P Zeman
Tick-borne encephalitis (TBE) is peculiar due to its unstable dynamics with profound inter-annual fluctuations in case numbers - a phenomenon not well understood to date. Possible reasons - apart from variable human contact with TBE foci - include external factors, e.g. climatic forcing, autonomous oscillations of the disease system itself, or a combined action of both. Spectral analysis of TBE data from six regions of central Europe (CE) revealed that the ostensibly chaotic dynamics can be explained in terms of four superposed (quasi-)periodical oscillations: a quasi-biennial, triennial, pentennial, and a decadal cycle...
October 24, 2016: Epidemiology and Infection
Cécile Aenishaenslin, Catherine Bouchard, Jules K Koffi, Nicholas H Ogden
Lyme disease (LD) risk is increasing in Canada. In 2014, the government of Canada launched a national communication campaign to raise awareness and promote the adoption of individual preventive behaviours toward ticks and LD. The objectives of this study were to evaluate and compare the adoption of LD preventive behaviours and the exposure to tick bites of Canadians in the five main targeted regions (British Columbia, Prairie provinces, Ontario, Quebec and the Atlantic provinces). A national survey was conducted in December 2014 (n=2876) to collect data on LD awareness, behaviours and risk factors...
October 13, 2016: Ticks and Tick-borne Diseases
Artem S Rogovskyy, Igor V Nebogatkin, Glen A Scoles
The Ixodidae include the most common tick species encountered in Europe. The ticks transmit a variety of bacterial and protozoan agents of medical and veterinary significance. The aim of the current work was to investigate distribution of Ixodes ricinus and Dermacentor reticulatus ticks in Kyiv, the largest and most densely populated megapolis of Ukraine. Ticks were collected at various recreational areas by flagging during May, the month that showed the highest tick abundance in the past. Sex distribution among I...
October 14, 2016: Ticks and Tick-borne Diseases
Bogumiła Skotarczak
Toxoplasmosis is globally distributed, water- and food borne zoonosis caused by the single protozoan Toxoplasma gondii and probably one-third of the world’s human population is infected with this pathogen. Domestic and wild felids are definitive hosts of this pathogen and intermediate hosts for great variety of other homoeothermic animals. Human as other of the intermediate hosts may become infected in the main route of infection; it is the ingestion of parasite oocysts in contaminated water or soil and undercooked meat...
October 1, 2016: Annals of Parasitology
Yoshihiro Komatsu, Rodney Landreneau, Blair A Jobe
No abstract text is available yet for this article.
October 21, 2016: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
Roberta Carvalho Basile, Natalino Hajime Yoshinari, Elenice Mantovani, Virgínia Nazário Bonoldi, Delphim da Graça Macoris, Antonio de Queiroz-Neto
Borreliosis caused by Borrelia burgdorferi sensu lato is a cosmopolitan zoonosis studied worldwide; it is called Lyme disease in many countries of the Northern Hemisphere and Lyme-like or Baggio-Yoshinari Syndrome in Brazil. However, despite the increasing number of suspect cases, this disease is still neglected in Brazil by the medical and veterinary communities. Brazilian Lyme-like borreliosis likely involves capybaras as reservoirs and Amblyomma and Rhipicephalus ticks as vectors. Thus, domestic animals can serve as key carriers in pathogen dissemination...
October 4, 2016: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
Ryo Nakao, Keita Matsuno, Yongjin Qiu, Junki Maruyama, Nao Eguchi, Naganori Nao, Masahiro Kajihara, Kentaro Yoshii, Hirofumi Sawa, Ayato Takada, Chihiro Sugimoto
Ticks harbour various microorganisms, some of which act as pathogens of humans and animals. The recent advancement of genome sequencing technologies revealed that a wide range of previously unrecognised microorganisms exist in ticks. Continuous cell lines established from ticks could play a key role in the isolation of such microorganisms; however, tick cells themselves have been known to harbour symbiotic microorganisms. The present study aimed to characterise putative RNA viral sequences detected in the culture supernatant of one of the most frequently used tick cell lines, ISE6, which was derived from embryos of the blacklegged tick Ixodes scapularis...
October 15, 2016: Ticks and Tick-borne Diseases
Carolina Moreira Blanco, Bernardo Rodrigues Teixeira, Alexandro Guterres da Silva, Renata Carvalho de Oliveira, Liana Strecht, Maria Ogrzewalska, Elba Regina S de Lemos
Information about tick fauna and monitoring of pathogen prevalences in ticks (Acari: Ixodidae) in various habitat types can enhance knowledge about the epidemiology of tick-borne pathogens in Brazil. This work shows the results of a study of tick parasitism of wild rodents and marsupials collected in seven localities in the southern part of Brazil, within Atlantic Forest and Cerrado biomes. A total of 61 ticks were collected from small mammals, and after identification to the species level, the ticks were individually tested for the presence of bacteria of the genera Rickettsia, Borrelia, family Anaplasmataceae, and protozoa of the genus Babesia...
October 15, 2016: Ticks and Tick-borne Diseases
Meghan B Brennan, Barbara L Herwaldt, James J Kazmierczak, John W Weiss, Christina L Klein, Catherine P Leith, Rong He, Matthew J Oberley, Laura Tonnetti, Patricia P Wilkins, Gregory M Gauthier
Babesia microti, an intraerythrocytic parasite, is tickborne in nature. In contrast to transmission by blood transfusion, which has been well documented, transmission associated with solid organ transplantation has not been reported. We describe parasitologically confirmed cases of babesiosis diagnosed ≈8 weeks posttransplantation in 2 recipients of renal allografts from an organ donor who was multiply transfused on the day he died from traumatic injuries. The organ donor and recipients had no identified risk factors for tickborne infection...
November 2016: Emerging Infectious Diseases
Y Yang, Y D Du
Tick-borne encephalitis, also called forest encephalitis, is caused by tick-borne encephalitis virus. Central nervous system lesion is the major clinical symptom of tick-borne encephalitis, as an acute infectious disease, the case fatality rate is as high as 10%-20%. Virology experts consider it as a key and difficult point in recent years. This paper summarizes the progress in research of epidemiological characteristics, pathogenesis, clinical manifestations, outcome, diagnosis and treatment of tick-borne encephalitis to provide evidence for the prevention and treatment of tick-borne encephalitis...
October 10, 2016: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
Youmna M'ghirbi, Marwa Bèji, Beatriz Oporto, Fatma Khrouf, Ana Hurtado, Ali Bouattour
BACKGROUND: Tick-borne diseases caused by Anaplasma species put serious constraints on the health and production of domestic cattle in tropical and sub-tropical regions. After recovering from a primary infection, cattle typically become persistent carriers of pathogens and play a critical role in the epidemiology of the disease, acting as reservoirs of the Anaplasma spp. METHODS: In this study a duplex PCR assay was used for the simultaneous detection of Anaplasma marginale and Anaplasma phagocytophilum in cattle using two primer pairs targeting msp4 and msp2 genes, respectively...
October 20, 2016: Parasites & Vectors
Jing-Jing Khoo, Fang-Shiang Lim, Fezshin Chen, Wai-Hong Phoon, Chee-Sieng Khor, Brian L Pike, Li-Yen Chang, Sazaly AbuBakar
Recent studies have shown that ticks harbor Coxiella-like bacteria, which are potentially tick-specific endosymbionts. We recently described the detection of Coxiella-like bacteria and possibly Coxiella burnetii in ticks found from rural areas in Malaysia. In the present study, we collected ticks, including Haemaphysalis bispinosa, Haemaphysalis hystricis, Dermacentor compactus, Dermacentor steini, and Amblyomma sp. from wildlife and domesticated goats from four different locations in Malaysia. Coxiella 16s rRNA genomic sequences were detected by PCR in 89% of ticks tested...
October 20, 2016: Vector Borne and Zoonotic Diseases
Maria Stefania Latrofa, Alessio Giannelli, Maria Flaminia Persichetti, Maria Grazia Pennisi, Laia Solano-Gallego, Emanuele Brianti, Antonio Parisi, Richard Wall, Filipe Dantas-Torres, Domenico Otranto
Despite their medical and veterinary importance, some tick species are so poorly studied, that their role within pathogen vector transmission cycles is difficult to assess. The tick Ixodes ventalloi is one such species, and its biology and phylogenetic status remain an issue of debate. In the present study, specimens of adult I. ventalloi (n = 65 females; n = 31 males) infesting cats in the Lipari Island (Aeolian archipelago, Sicily, southern Italy) were characterized morphologically and molecularly, the latter based on mitochondrial 16S rRNA and cytochrome c oxidase subunit 1 (cox1) genes...
October 20, 2016: Parasitology Research
Yann J K Bertrand, Magnus Johansson, Peter Norberg
The hypothesis of wide spread reticulate evolution in Tick-Borne Encephalitis virus (TBEV) has recently gained momentum with several publications describing past recombination events involving various TBEV clades. Despite a large body of work, no consensus has yet emerged on TBEV evolutionary dynamics. Understanding the occurrence and frequency of recombination in TBEV bears significant impact on epidemiology, evolution, and vaccination with live vaccines. In this study, we investigated the possibility of detecting recombination events in TBEV by simulating recombinations at several locations on the virus' phylogenetic tree and for different lengths of recombining fragments...
2016: PloS One
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"