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https://www.readbyqxmd.com/read/27903055/local-landscape-effects-on-population-dynamics-of-ixodes-ricinus
#1
Naveed Asghar, Mona Petersson, Magnus Johansson, Patrik Dinnetz
Ixodes ricinus, a common tick in Europe, transmits severe tickborne pathogens (TBPs). In Sweden, both prevalence and incidence of tick-borne infections have increased during the last few decades, and a majority of the cases is reported from the area around Stockholm. Among ticks, transmission of TBPs involves co-feeding of susceptible larvae or nymphs with infected ticks on the same host. Seasonal synchrony of immature stages and total tick abundance are important factors for the probability of horizontal transmission of TBPs...
November 21, 2016: Geospatial Health
https://www.readbyqxmd.com/read/27880753/notes-from-the-field-community-based-prevention-of-rocky-mountain-spotted-fever-sonora-mexico-2016
#2
Anne Straily, Naomi Drexler, Denica Cruz-Loustaunau, Christopher D Paddock, Gerardo Alvarez-Hernandez
Rocky Mountain spotted fever (RMSF), a life-threatening tickborne zoonosis caused by Rickettsia rickettsii, is a reemerging disease in Mexico (1,2). R. rickettsii is an intracellular bacterium that infects vascular endothelium and can cause multisystem organ failure and death in the absence of timely administration of a tetracycline-class antibiotic, typically doxycycline. Epidemic RMSF, as described in parts of Arizona and Mexico, is associated with massive local infestations of the brown dog tick (Rhiphicephalus sanguineus sensu lato) on domestic dogs and in peridomestic settings that result in high rates of human exposure; for example, during 2003-2012, in Arizona the incidence of RMSF in the three most highly affected communities was 150 times the U...
November 25, 2016: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/27789971/morgellons-disease-a-filamentous-borrelial-dermatitis
#3
REVIEW
Marianne J Middelveen, Raphael B Stricker
Morgellons disease (MD) is a dermopathy characterized by multicolored filaments that lie under, are embedded in, or project from skin. Although MD was initially considered to be a delusional disorder, recent studies have demonstrated that the dermopathy is associated with tickborne infection, that the filaments are composed of keratin and collagen, and that they result from proliferation of keratinocytes and fibroblasts in epithelial tissue. Culture, histopathological and molecular evidence of spirochetal infection associated with MD has been presented in several published studies using a variety of techniques...
2016: International Journal of General Medicine
https://www.readbyqxmd.com/read/27787203/the-pcr-and-nested-pcr-detection-of-borrelia-burgdorferi-sensu-lato-anaplasma-phagocytophilum-and-babesia-microti-in-dermacentor-reticulatus-f-collected-in-a-new-location-in-poland-trzciel-western-poland
#4
Patrycja Opalińska, Anna Wierzbicka, Marek Asman
The study was performed in the Trzciel Forest Districts which is located in the west part of Poland. The Scots pine is the main tree species creating forest landscape there. Dermacentor reticulatus, usually found in wet, boggy and damp habitat, in this case was discovered in fresh mixed coniferous forest and fresh coniferous forest. In Central Europe the Dermacentor reticulatus is after Ixodes ricinus the second most important vector for tick-borne diseases in Europe. The ticks were collected by flagging from lower vegetation during the autumn peak of their activity...
December 1, 2016: Acta Parasitologica
https://www.readbyqxmd.com/read/27767907/neutralizing-antibodies-to-severe-fever-with-thrombocytopenia-syndrome-virus-4-years-after-hospitalization-china
#5
Yu-Ting Huang, Li Zhao, Hong-Ling Wen, Yi Yang, Hao Yu, Xue-Jie Yu
Severe fever with thrombocytopenia syndrome is an emerging hemorrhagic fever disease in eastern Asia, caused by a tickborne bunyavirus. Of 25 patients hospitalized with this disease in China, 100% produced and maintained neutralizing antibodies to severe fever with thrombocytopenia syndrome virus for the study period of 4 years.
November 2016: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/27767010/transmission-of-babesia-microti-parasites-by-solid-organ-transplantation
#6
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
https://www.readbyqxmd.com/read/27633921/use-of-extracorporeal-support-in-hemophagocytic-lymphohistiocytosis-secondary-to-ehrlichiosis
#7
Amy Cheng, Feifei Williams, James Fortenberry, Catherine Preissig, Steven Salinas, Pradip Kamat
Ehrlichiosis, caused by transmission of Ehrlichia chaffeensis to humans through the bite of an infected lone star tick, can lead to secondary hemophagocytic lymphohistiocytosis (HLH), a life-threatening condition caused by uncontrolled activation of the cellular immune system. We describe a child with HLH secondary to ehrlichiosis who developed multiorgan failure and was successfully managed with extracorporeal membrane oxygenation (ECMO). A 9-year-old boy developed headaches, fever, and sore throat after suspected tick exposure...
September 15, 2016: Pediatrics
https://www.readbyqxmd.com/read/27550334/tickborne-fever-associated-with-abortion-outbreak-in-dairy-cows
#8
(no author information available yet)
Anaplasma phagocytophilum detected in aborting cows on rough grazingLead poisoning in bullocksPersistent bovine viral diarrhoea virus infection and colisepticaemia in a 20-hour-old calfAbortion due to bovine herpesvirus 1 in a four-year-old cowTickborne fever in lambsInfectious sinusitis due to Mycoplasma gallisepticum in pheasants These are among matters discussed in the disease surveillance report for May 2016 from SAC Consulting: Veterinary Services (SAC C VS).
August 20, 2016: Veterinary Record
https://www.readbyqxmd.com/read/27532491/large-scale-survey-for-tickborne-bacteria-khammouan-province-laos
#9
Andrew J Taylor, Khamsing Vongphayloth, Malavanh Vongsouvath, Marc Grandadam, Paul T Brey, Paul N Newton, Ian W Sutherland, Sabine Dittrich
We screened 768 tick pools containing 6,962 ticks from Khammouan Province, Laos, by using quantitative real-time PCR and identified Rickettsia spp., Ehrlichia spp., and Borrelia spp. Sequencing of Rickettsia spp.-positive and Borrelia spp.-positive pools provided evidence for distinct genotypes. Our results identified bacteria with human disease potential in ticks in Laos.
September 2016: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/27434048/borrelia-miyamotoi-infection-in-patients-from-upper-midwestern-united-states-2014-2015
#10
Dean A Jobe, Steven D Lovrich, Darby G Oldenburg, Todd J Kowalski, Steven M Callister
We confirmed Borrelia miyamotoi infection in 7 patients who had contracted an illness while near La Crosse, Wisconsin, USA, an area where Ixodes scapularis ticks are endemic. B. miyamatoi infection should now be considered among differential diagnoses for patients from the midwestern United States who have signs and symptoms suggestive of tickborne illness.
August 2016: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/27422913/working-together-to-mitigate-the-risks-of-tickborne-diseases
#11
(no author information available yet)
No abstract text is available yet for this article.
July 16, 2016: Veterinary Record
https://www.readbyqxmd.com/read/27383855/tickborne-coinfections-in-the-united-states
#12
James H Diaz
Unlike mosquitoes, ticks transmit the broadest range of pathogens, including bacteria, viruses, and parasites. Ticks have capitalized on many competitive advantages offered to them by changes in climate and human lifestyle and a greater abundance of wild animal reservoir hosts no longer effectively controlled. As a result, tick-transmitted coinfections are increasing today with both recognized and newly discovered pathogens that complicate differential diagnosis and antimicrobial treatment. Without the support of immunological and molecular diagnostic techniques, usually only available at federal and some state laboratories, the initial differential diagnosis of tickborne coinfections is complicated and antimicrobial therapy may not cover coinfections...
March 2016: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/27381345/infection-resistance-and-tolerance-in-peromyscus-spp-natural-reservoirs-of-microbes-that-are-virulent-for-humans
#13
Alan G Barbour
The widely-distributed North American species Peromyscus leucopus and P. maniculatus of cricetine rodents are, between them, important natural reservoirs for several zoonotic diseases of humans: Lyme disease, human granulocytic anaplasmosis, babesiosis, erhlichiosis, hard tickborne relapsing fever, Powassan virus encephalitis, hantavirus pulmonary syndrome, and plague. While these infections are frequently disabling and sometimes fatal for humans, the peromyscines display little pathology and apparently suffer few consequences, even when prevalence of persistent infection in a population is high...
July 2, 2016: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/27188066/where-are-the-ticks-solving-the-mystery-of-a-tickborne-relapsing-fever-outbreak-at-a-youth-camp
#14
Marlene Gaither, Mare Schumacher, Nathan Nieto, Jennifer Corrigan, Hugh Murray, Matt Maurer
During the summer of 2014 an outbreak of tickborne relapsing fever (TBRF) occurred in a group of high school students and staff at a youth camp, which was reported to Coconino County Public Health Services District. Six confirmed and five probable cases of TBRF occurred. During the environmental investigation two rodents tested positive for TBRF, but the vector, soft ticks, could not be found in their "normal" habitat. Ticks were finally located in areas not typical for soft ticks.
April 2016: Journal of Environmental Health
https://www.readbyqxmd.com/read/27172113/diagnosis-and-management-of-tickborne-rickettsial-diseases-rocky-mountain-spotted-fever-and-other-spotted-fever-group-rickettsioses-ehrlichioses-and-anaplasmosis-united-states
#15
Holly M Biggs, Casey Barton Behravesh, Kristy K Bradley, F Scott Dahlgren, Naomi A Drexler, J Stephen Dumler, Scott M Folk, Cecilia Y Kato, R Ryan Lash, Michael L Levin, Robert F Massung, Robert B Nadelman, William L Nicholson, Christopher D Paddock, Bobbi S Pritt, Marc S Traeger
Tickborne rickettsial diseases continue to cause severe illness and death in otherwise healthy adults and children, despite the availability of low-cost, effective antibacterial therapy. Recognition early in the clinical course is critical because this is the period when antibacterial therapy is most effective. Early signs and symptoms of these illnesses are nonspecific or mimic other illnesses, which can make diagnosis challenging. Previously undescribed tickborne rickettsial diseases continue to be recognized, and since 2004, three additional agents have been described as causes of human disease in the United States: Rickettsia parkeri, Ehrlichia muris-like agent, and Rickettsia species 364D...
2016: MMWR. Recommendations and Reports: Morbidity and Mortality Weekly Report. Recommendations and Reports
https://www.readbyqxmd.com/read/27156138/the-heat-is-on-killing-blacklegged-ticks-in-residential-washers-and-dryers-to-prevent-tickborne-diseases
#16
Christina A Nelson, Catherine M Hayes, Molly A Markowitz, Jacqueline J Flynn, Alan C Graham, Mark J Delorey, Paul S Mead, Marc C Dolan
Reducing exposure to ticks can help prevent Lyme disease and other tickborne diseases. Although it is currently recommended to dry clothes on high heat for one hour to kill ticks on clothing after spending time outdoors, this recommendation is based on a single published study of tick survival under various washing conditions and a predetermined one-hour drying time. We conducted a series of tests to investigate the effects of temperature, humidity, and drying time on killing nymphal and adult blacklegged ticks (Ixodes scapularis)...
July 2016: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/27138773/tickborne-coinfections-in-the-united-states
#17
James H Diaz Md
Unlike mosquitoes, ticks transmit the broadest range of pathogens, including bacteria, viruses, and parasites. Ticks have capitalized on many competitive advantages offered to them by changes in climate and human lifestyle and a greater abundance of wild animal reservoir hosts no longer effectively controlled. As a result, tick-transmitted coinfections are increasing today with both recognized and newly discovered pathogens that complicate differential diagnosis and antimicrobial treatment. Without the support of immunological and molecular diagnostic techniques, usually only available at federal and some state laboratories, the initial differential diagnosis of tickborne coinfections is complicated and antimicrobial therapy may not cover coinfections...
March 2016: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/27089251/rickettsia-parkeri-rickettsiosis-arizona-usa
#18
Kristen L Herrick, Sandra A Pena, Hayley D Yaglom, Brent J Layton, Amanda Moors, Amanda D Loftis, Marah E Condit, Joseph Singleton, Cecilia Y Kato, Amy M Denison, Dianna Ng, James W Mertins, Christopher D Paddock
In the United States, all previously reported cases of Rickettsia parkeri rickettsiosis have been linked to transmission by the Gulf Coast tick (Amblyomma maculatum). Here we describe 1 confirmed and 1 probable case of R. parkeri rickettsiosis acquired in a mountainous region of southern Arizona, well beyond the recognized geographic range of A. maculatum ticks. The likely vector for these 2 infections was identified as the Amblyomma triste tick, a Neotropical species only recently recognized in the United States...
May 2016: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/26889721/lyme-disease-in-hispanics-united-states-2000-2013
#19
Christina A Nelson, J Andrew Starr, Kiersten J Kugeler, Paul S Mead
Hispanics comprise a growing portion of the US population and might have distinct risk factors for tickborne diseases. During 2000-2013, a total of 5,473 Lyme disease cases were reported among Hispanics through national surveillance. Hispanics were more likely than non-Hispanics to have signs of disseminated infection and onset during fall months.
March 2016: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/26811941/frequency-and-distribution-of-rickettsiae-borreliae-and-ehrlichiae-detected-in-human-parasitizing-ticks-texas-usa
#20
Elizabeth A Mitchell, Phillip C Williamson, Peggy M Billingsley, Janel P Seals, Erin E Ferguson, Michael S Allen
To describe the presence and distribution of tickborne bacteria and their vectors in Texas, USA, we screened ticks collected from humans during 2008-2014 for Rickettsia, Borrelia, and Ehrlichia spp. Thirteen tick species were identified, and 23% of ticks carried bacterial DNA from at least 1 of the 3 genera tested.
February 2016: Emerging Infectious Diseases
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