Prevalence of tick-borne encephalitis virus and Borrelia burgdorferi sensu lato in Ixodes ricinus ticks in Lower Bavaria and Upper Palatinate, Germany

Publication date: Available online 15 January 2020Source: Ticks and Tick-borne DiseasesAuthor(s): Dana Zubriková, Maria Wittmann, Václav Hönig, Pavel Švec, Bronislava Víchová, Sandra Essbauer, Gerhard Dobler, Libor Grubhoffer, Kurt PfisterAbstractLyme borreliosis and tick-borne encephalitis (TBE) are the most common tick-borne diseases in Germany. We collected Ixodes ricinus ticks from 16 high-risk and four low-risk sites distributed in Lower Bavaria and Upper Palatinate based on the number of human TBE cases recorded at the Robert Koch Institute from 2001 to 2009. A total of 8805 questing ticks (8203 nymphs, 602 adults) were collected in 2010 and examined in pools for the presence of tick-borne encephalitis virus (TBEV) using real-time RT–PCR. Overall TBEV prevalence evaluated as the minimum infection rate (MIR) was 0.26% (23 positive pools/8805 ticks in 1029 pools). TBEV was detected at seven of the 16 high-risk sites, where MIR ranged from 0.16 to 2.86%. A total of 3969 ticks were examined by PCR for infection with Borrelia burgdorferi sensu lato (s.l.) targeting the 5S-23S rRNA intergenic spacer (IGS) region. IGS nucleotide sequences were used to determine genospecies. Selected positive Borrelia samples were subjected to PCR and sequencing targeting the OspA gene, providing 46 sequences for molecular phylogenetic analysis. Of the 3969 questing ticks, 506 (12.7%) were positive for B. burgdorferi s.l. Seven B. burgdorferi s.l. g...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research

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Conclusions: The interleukin-6/interleukin-10 ratio can be used as a rapid diagnostic cue upon suspected tick-borne infection, enabling fast and correct treatment. Also, in serology-negative results, such information may strengthen a clinical suspicion.
Source: The Pediatric Infectious Disease Journal - Category: Infectious Diseases Tags: Translational Medicine Reports Source Type: research
Abstract Ixodes scapularis is currently known to transmit 7 pathogens responsible for Lyme disease, anaplasmosis, babesiosis, tick-borne relapsing fever, ehrlichiosis, and Powassan encephalitis. Ixodes scapularis can also be colonized by endosymbiotic bacteria including those in the genus of Rickettsia. We screened 459 I. scapularis ticks submitted to the Connecticut Agricultural Experiment Station Tick Testing Laboratory with the objectives to (1) examine differences in infection prevalence of Borrelia burgdorferi, Anaplasma phagocytophilum, Babesia microti, and Borrelia miyamotoi, (2) evaluate whether prevalence...
Source: The Journal of Parasitology - Category: Parasitology Authors: Tags: J Parasitol Source Type: research
(CNN/CBS) — The climate crisis is making us more vulnerable to ticks in an unprecedented and growing threat to public health, according to a new report. Bacterial and protozoan tick-borne diseases doubled in the United States between 2004 and 2016, the report notes, and in 2017, more than 90% of the 60,000 vector-borne diseases in the United States were linked to these particular bloodsucking bugs. The warmer temperatures brought by the climate crisis, in addition to ecological changes and reforestation, have extended the bugs’ range into regions that had not seen certain types of ticks for many decades, if eve...
Source: WBZ-TV - Breaking News, Weather and Sports for Boston, Worcester and New Hampshire - Category: Consumer Health News Authors: Tags: Boston News Health Syndicated CBSN Boston Lone Star Tick ticks Source Type: news
Abstract Tick-borne pathogens pose a considerable disease burden in Europe and North America, where increasing numbers of human cases and the emergence of new tick-borne pathogens has renewed interest in resolving the mechanisms underpinning their geographical distribution and abundance. For Borrelia burgdorferi and tick-borne encephalitis (TBE) virus, transmission of infection from one generation of ticks to another occurs when older nymphal ticks infect younger larval ticks feeding on the same host, either indirectly via systemic infection of the vertebrate host or directly when feeding in close proximity. Here,...
Source: Theoretical Population Biology - Category: Biology Authors: Tags: Theor Popul Biol Source Type: research
der F Abstract Introduction: Despite advancements in diagnostic capabilities and the availability of effective antimicrobial agents, community-acquired infections of the central nervous system (CNS) are still associated with high mortality rates. Aim: To assess the epidemiological and clinical characteristics of community-acquired CNS infections treated in the West Pannonian region between 2010 and 2016. Method: Clinical data of 176 patients were retrospectively analysed in two age cohorts: 15 to 65 and more than 65 years of age. Results: Neuroinfections were found to be bacterial in 81, viral in 91, parasitic in ...
Source: Orvosi Hetilap - Category: General Medicine Authors: Tags: Orv Hetil Source Type: research
Authors: Brodziński S, Nasierowski T Abstract In the second part of the article case reports of three patients were presented. All patientswere treated for Borrelia infection and all of them developed psychotic disorders. History of each patient was different, as well as the probability of causal relationship between neuroborreliosis and psychosis. The first case concerns a female patient with no former psychiatric history, who developed psychotic episode secondary to neuroborreliosis. Psychotic disorders resolved after antibiotic treatment. In the second case, a male patient was previously twice hospitalized in p...
Source: Psychiatria Polska - Category: Psychiatry Tags: Psychiatr Pol Source Type: research
Vector-Borne and Zoonotic Diseases, Ahead of Print.
Source: Vector-Borne and Zoonotic Diseases - Category: Infectious Diseases Authors: Source Type: research
oor Ticks are vectors of several pathogens that can be transmitted to humans and their geographic ranges are expanding. The exposure of ticks to new hosts in a rapidly changing environment is likely to further increase the prevalence and diversity of tick-borne diseases. Although ticks are known to transmit bacteria and viruses, most studies of tick-borne disease have focused upon Lyme disease, which is caused by infection with Borrelia burgdorferi. Until recently, ticks were considered as the vectors of a few viruses that can infect humans and animals, such as Powassan, Tick-Borne Encephalitis and Crimean–Co...
Source: Viruses - Category: Virology Authors: Tags: Review Source Type: research
Publication date: Available online 22 April 2019Source: Ticks and Tick-borne DiseasesAuthor(s): Pavel Švec, Václav Hönig, Dana Zubriková, Maria Wittmann, Kurt Pfister, Libor GrubhofferAbstractResearch projects in the field of eco-epidemiology of tick-borne diseases often require extensive sampling of arthropod vectors in the field. The aim of our study was to use geographical information systems (GIS) to select appropriate sampling sites of Ixodes ricinus ticks in central European habitat for further ecological studies of vector-borne pathogens (tick-borne encephalitis virus and Borrelia burgdorfe...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
Authors: Boulanger N, Boyer P, Talagrand-Reboul E, Hansmann Y Abstract Ticks are a major group of arthropod vectors, characterized by the diversity of pathogens they transmit, by their impact on human and animal health, and by their socioeconomic implication especially in countries of the Southern Hemisphere. In Europe, Ixodes is the most important tick due to its wide distribution in the ecosystems and the variety of transmitted pathogens, in particular Borrelia (responsible for Lyme borreliosis), but also the tick-borne encephalitis virus. Their increased presence in the environment since the beginning of the 20t...
Source: Medecine et Maladies Infectieuses - Category: Infectious Diseases Tags: Med Mal Infect Source Type: research
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