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https://www.readbyqxmd.com/read/28273010/post-babesiosis-warm-autoimmune-hemolytic-anemia
#1
Ann E Woolley, Mary W Montgomery, William J Savage, Maureen O Achebe, Kathleen Dunford, Sarah Villeda, James H Maguire, Francisco M Marty
Background Babesiosis, a tickborne zoonotic disease caused by intraerythrocytic protozoa of the genus babesia, is characterized by nonimmune hemolytic anemia that resolves with antimicrobial treatment and clearance of parasitemia. The development of warm-antibody autoimmune hemolytic anemia (also known as warm autoimmune hemolytic anemia [WAHA]) in patients with babesiosis has not previously been well described. Methods After the observation of sporadic cases of WAHA that occurred after treatment of patients for babesiosis, we conducted a retrospective cohort study of all the patients with babesiosis who were cared for at our center from January 2009 through June 2016...
March 9, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28221107/use-of-mass-participation-outdoor-events-to-assess-human-exposure-to-tickborne-pathogens
#2
Jessica L Hall, Kathrin Alpers, Kevin J Bown, Stephen J Martin, Richard J Birtles
Mapping the public health threat of tickborne pathogens requires quantification of not only the density of infected host-seeking ticks but also the rate of human exposure to these ticks. To efficiently sample a high number of persons in a short time, we used a mass-participation outdoor event. In June 2014, we sampled ≈500 persons competing in a 2-day mountain marathon run across predominantly tick-infested habitat in Scotland. From the number of tick bites recorded and prevalence of tick infection with Borrelia burgdoferi sensu lato and B...
March 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28055326/prevalence-and-distribution-of-human-and-tick-infections-with-the-ehrlichia-muris-like-agent-and-anaplasma-phagocytophilum-in-wisconsin-2009-2015
#3
Darby S Murphy, Xia Lee, Scott R Larson, Diep K Hoang Johnson, Theoren Loo, Susan M Paskewitz
Ehrlichiosis and anaplasmosis are important emerging tickborne zoonoses that affect both humans and animals. Knowledge of the geographic distribution and prevalence of Ehrlichia spp. and Anaplasma phagocytophilum in Wisconsin is important information as a baseline for future comparisons. Reported human cases between 2009 and 2015 were identified using the Wisconsin Electronic Disease Surveillance System (WEDSS) and mapped by county of residence. Vector surveillance was established using ticks collected from animals by partners, including veterinary medical clinics, domestic animal shelters, and wildlife rehabilitation centers from 40 Wisconsin counties...
January 5, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/27999153/rhipicephalus-sanguineus-importation-into-the-uk-surveillance-risk-public-health-awareness-and-one-health-response
#4
K M Hansford, L P Phipps, B Cull, M E Pietzsch, J M Medlock
As part of Public Health England's assessment of vectorborne disease risk to public health in the UK, tick specimens are regularly submitted by veterinarians for identification via the Tick Surveillance Scheme. Recently, a number of these specimens have been identified as the brown dog tick, Rhipicephalus sanguineus This species is non-endemic to the UK and presents a risk to both human and animal health due to its role in the transmission of various tickborne pathogens. Although current climatic conditions in the UK are unlikely to permit the survival of this species outdoors, indoor infestations can occur and this can present a risk of disease transmission within an infested property...
February 4, 2017: Veterinary Record
https://www.readbyqxmd.com/read/27959685/screening-for-babesia-microti-in-the-u-s-blood-supply
#5
Erin D Moritz, Colleen S Winton, Laura Tonnetti, Rebecca L Townsend, Victor P Berardi, Mary-Ellen Hewins, Karen E Weeks, Roger Y Dodd, Susan L Stramer
Background Babesia microti, a tickborne intraerythrocytic parasite that can be transmitted by means of blood transfusion, is responsible for the majority of cases of transfusion-transmitted babesiosis in the United States. However, no licensed test exists for screening for B. microti in donated blood. We assessed data from a large-scale, investigational product-release screening and donor follow-up program. Methods From June 2012 through September 2014, we performed arrayed fluorescence immunoassays (AFIAs) for B...
December 8, 2016: New England Journal of Medicine
https://www.readbyqxmd.com/read/27903055/local-landscape-effects-on-population-dynamics-of-ixodes-ricinus
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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...
October 2016: Pediatrics
https://www.readbyqxmd.com/read/27550334/tickborne-fever-associated-with-abortion-outbreak-in-dairy-cows
#13
(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
#14
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
#15
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
#16
(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
#17
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
#18
REVIEW
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...
January 2017: 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
#19
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
#20
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...
May 13, 2016: MMWR. Recommendations and Reports: Morbidity and Mortality Weekly Report. Recommendations and Reports
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