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Emergence of Babesia canis in southern England.

BACKGROUND: The United Kingdom is considered free of autochthonous transmission of canine babesiosis although cases are reported in dogs ass … ified by PCR-sequencing based on amplification of the cytochrome c oxidase subunit one (cox1) gene. Dermacentor reticulatus ticks were sampled from field sites in England and Wales. RESULTS: Blood smear analysis on samples taken from some of the affected dogs confirmed the presence of a large Babesia species within erythrocytes. A tick recovered from one of …

Bartonella infections in fleas (Siphonaptera: Pulicidae) and lack of bartonellae in ticks (Acari: Ixodidae) from Hungary.

Fleas (95 Pulex irritans, 50 Ctenocephalides felis, 45 Ctenocephalides canis) and ixodid ticks (223 ixodes ricinus, 231 Dermacentor reticulatus, 204 Haemaphysalis concinna) were collected in Hungary and tested, in assays based on PCR, for Bartonella infection. Low percentages of P. irritans (4.2%) and C. felis (4.0%) were found to be infected. The groEL sequences of the four isolates from P. irritans were different from all the homologous sequences for bartonellae previously stored in GenBank but closest to those of Bartonella sp. SE-Bart-B (sharing 96% identities). The groEL sequences of the …

Detection of haemoparasites in cattle by reverse line blot hybridisation with a note on the distribution of ticks in Sicily.

A reverse line blot hybridisation (RLB) of 21 oligonucleotides with polymerase chain reaction (PCR) amplified regions of 16S rRNA (Ehrlichia … een April 1998 and November 1999 included H. lusitanicum, Rhipicephalus sanguineus group, R. bursa, Dermacentor marginatus, Haemaphysalis punctata, B. annulatus and I. ricinus.

Geographical distribution and pathogenesis of ticks and tick-borne viral diseases.

Ticks are obligatory hematophagous arthropods that harbor and transmit infectious pathogens to humans and animals. Tick species belonging to Amblyomma, Ixodes, Dermacentor, and Hyalomma genera may transmit certain viruses such as Bourbon virus (BRBV), Dhori virus (DHOV), Powassan virus (POWV), Omsk hemorrhagic fever virus (OHFV), Colorado tick fever virus (CTFV), Crimean-Congo hemorrhagic fever virus (CCHFV), Heartland virus (HRTV), Kyasanur forest disease virus (KFDV), etc. that affect humans and certain wildlife. The tick vectors may become infected through feeding on viraemic hosts before t…

An outbreak of tick paralysis in free-ranging mouflon (Ovis ammon musimon).

During November 2006, two live and one dead mouflon (Ovis ammon musimon) were presented with a history of weakness, tremors, and paralysis. … t International, 5830 Boxmeer, Netherlands). The collected ticks were identified as Ixodes ricinus, Dermacentor marginatus, and Haemaphysalis punctata. In the following 24 hr, all treated animals recovered fully. This report describes a naturally occurring outbreak of tick paralysis in free-ranging mouflons from a karst habitat.

Behavioral characteristics and endosymbionts of two potential tularemia and Rocky Mountain spotted fever tick vectors.

Due to climate change-induced alterations of temperature and humidity, the distribution of pathogen-carrying organisms such as ticks may shift. Tick survival is often limited by environmental factors such as dryness, but a predicted hotter and wetter world may allow the expansion of tick ranges. Dermacentor andersoni and D. variabilis ticks are morphologically similar, co-occur throughout the Inland Northwest of Washington State, U.S.A., and both can be injected with pathogenic Rickettsia and Francisella bacteria. Differences in behavior and the potential role of endosymbiotic Rickettsia and F…

Molecular Detection of Coxiella burnetii in Ticks Isolated from Domestic Animals in Slaughterhouses and Farms, Shahr-E-Rey, Tehran, Iran.

BACKGROUND: Coxiella burnetii causes Q fever, a zoonotic and vector-borne disease. Ticks serve as vectors for this bacterium. This study aim … me PCR. RESULTS: Ticks were classified into four genera: Hyalomma (66.48%), Rhipicepalus (23.47%), Dermacentor (7.26%), and Ornithodoros (2.79%). Furthermore, 35.20% of the ticks were Hyalomma nymphs.All 77 ticks were pooled by species, and C. burnetii was found in 22.08% (n= 17). Ornithodoros lahorensis was the most prevalent tick infected with C. burnetii. …

Spotted fever group rickettsiae in hard ticks in eastern and southern Kazakhstan.

Infections with spotted fever group rickettsiae represent a worldwide health problem, characterized by persistent high fever, headache, and rash in humans, domestic animals, and wildlife. To date, the occurrence of Rickettsia species in hard ticks has not been thoroughly studied, especially in eastern and southern Kazakhstan. A total of 1,245 adult ticks, comprising 734 Dermacentor marginatus, 219 Hyalomma scupense, 144 Hyalomma asiaticum, 84 Hyalomma marginatum, 48 Rhipicephalus turanicus, and 16 Haemaphysalis erinacei, collected from East Kazakhstan, Abay, Jetsu, Almaty, Jambyl, South Kazakh…

Микробиальное разнообразие клещей и новая группа тифов (Rickettsiales Bacterium Ac37b) в Иннер-Монголии, Китай.

Тики могут нести многочисленные патогены, а животноводство во внутренней Монголии обеспечивает прекрасные экологические условия для клещей. Это исследование было посвящено микробиоме клещей из различных географических районов Внутренней Монголии; у овец в трех основных пастбищах и в кустах, расположенных в лесу, было собрано 905 дермосентёрских орехов и 36 иксодов Персулката. Образцы смешанной ДНК были получены из трех образцов из каждого региона и клещей. Микробиальное разнообразие было проанализировано на основе последовательности 16S rRNA, и было определено разнообразие α и β. Доминирующим

Совпадение в аннотации оригинала
Ticks can carry multiple pathogens, and Inner Mongolia's animal husbandry provides excellent environmental conditions for ticks. This study characterized the microbiome of ticks from different geographical locations in Inner Mongolia; 905 Dermacentor nuttalli and 36 Ixodes persulcatus were collected from sheep in three main pasture areas and from bushes with…

Diversity and seasonality of host-seeking ticks in a periurban environment in the Central Midwest (USA).

Between March 2014 and February 2017, host-seeking ticks were collected during the late spring and summer months seasonally, and as well as continually through all seasons from several sites in a periurban environment in Pittsburg, Kansas, located in the Central Midwestern United States. All three post-emergent life-stages of Amblyomma americanum, and the adults of three other ticks viz. Dermacentor variabilis, A. maculatum, and Ixodes scapularis were collected using the flagging method, and were taxonomically identified using morphological and molecular methods. A total of 15946 ticks were co…

Molecular detection of Rickettsia species in ticks collected in the Mexico-USA transboundary region.

Zoonotic tick-borne diseases, including those caused by Rickettsia species, continue to have serious consequences for public health worldwide. One such disease that has emerged as a major problem in several countries of the American continent is the Rocky Mountain Spotted Fever (RMSF) caused by the bacterium Rickettsia rickettsii. Several tick species are capable of transmitting R. rickettsia, including Amblyomma cajennense, A. aureolatum, A. imitator, Rhipicephalus sanguineus, Dermacentor andersoni, D. variabilis and possibly A. americanum. Despite previous reports in Mexico linking new outbr…

Complete Genomic Characterization of Three Tick-Borne Encephalitis Viruses Detected Along the China-North Korea Border, 2011.

Tick-borne encephalitis virus (TBEV) causes neurological infections with serious sequelae in Europe and Northeast Asia. In China, the major epidemic areas are along the borders with Russia and North Korea. Although several TBEV isolates have been reported, the biological characteristics of the Chinese strains, especially those along the China-North Korea border, are unclear. In this study, we detected seven TBEV fragment sequences in 602 adult Dermacentor silvarum collected in the Changbai Mountain area of Jilin Province on the China-North Korea border and characterized the genome of three TBE…

Detection of spotted fever group Rickettsia in Haemaphysalis longicornis from Hebei Province, China.

DNA samples from 737 tick pools, representing 6,850 Haemaphysalis longicornis and 51 Dermacentor nuttalli collected from Hebei Province, China, were analyzed by polymerase chain reaction (PCR) for the presence of spotted fever group Rickettsia. Fifty (6.9%) of 724 H. longicornis in the tick pool were positive, but no positive samples were found in 13 D. nuttalli. Sequence analysis of the partial outer membrane protein A (ompA) genes from the 10 positive samples showed 97.4-99.8% identity, but were different from the homologous sequence of Rickettsia previously deposited in GenBank. Phylogeneti…

Neuropathogenic properties of Argas (Persicargas) walkerae larval homogenates.

Several tick species have been demonstrated, described, or suspected to cause paralysis in their host during the repletion process, presumab … lable with the results obtained for two other paralysis-causing tick species, Ixodes holocyclus and Dermacentor andersoni, which were indicated to cause paralysis by decreasing the synthesis or release of acetylcholine at the neuromuscular junction.

Granulocytic ehrlichiosis and tick infestation in mountain lions in California.

Forty-seven mountain lions (Puma concolor) collected year-round in 1996 to 1998 from the Sierra Nevada foothills, the northern coast ranges, and in Monterey County (California, USA) were examined for infestation with Ixodes pacificus and Dermacentor variabilis ticks. Ticks were found predominantly in winter and spring. The seroprevalence of granulocytic ehrlichiae (GE) antibodies (Ehrlichia equi or the agent of human granulocytic ehrlichiosis) was 17% and the PCR-prevalence of DNA characteristic of GE in blood was 16%. There were eight polymerase chain reaction (PCR)-positive but seronegative …

Evaluation of three commercial tick removal tools.

OBJECTIVE: To evaluate three commercially available tick removal tools against medium-tipped nontissue tweezers. METHODS: We evaluated three commercially available tick removal tools against medium-tipped tweezers. Three inexperienced users randomly removed attached American dog ticks (Dermacentor variabilis Say) and lone star ticks (Amblyomma americanum L.) from laboratory rabbits in a university animal facility using all tools during one removal session. RESULTS: Tick damage occurring from removal and quantity of attachment cement were compared. No tool removed nymphs without damage and al…

Ticks parasitizing humans in Georgia and South Carolina.

From 1990 through 1995, 913 ticks removed from 460 human patients in Georgia or South Carolina were identified and recorded. The majority of these specimens (758, 83.0%) were lone star ticks, Amblyomma americanum. One hundred and four (11.4%) American dog ticks Dermacentor variabilis, 36 (3.9%) blacklegged ticks Ixodes scapularis, 9 (1.0%) Gulf coast ticks Amblyomma maculatum, and 6 (0.7%) brown dog ticks Rhipicephalus sanguineus were also recovered. All active stages (larvae, nymphs, and adults) of A. americanum were represented, whereas nymphs and adults of D. variabilis and I. scapularis an…