947 results on '"TICKS"'
Search Results
2. Looking Beyond the Lens of Crimean-Congo Hemorrhagic Fever in Africa
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Olalekan John Okesanya, Gbolahan Deji Olatunji, Emmanuel Kokori, Noah Olabode Olaleke, Olaniyi Abideen Adigun, Emery Manirambona, and Don Eliseo Lucero-Prisno
- Subjects
Crimean-Congo hemorrhagic fever ,CCHF ,CCHF virus ,CCHFV ,outbreak ,ticks ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
Crimean-Congo hemorrhagic fever (CCHF) is a lethal viral disease that has severe public health effects throughout Africa and a case fatality rate of 10%–40%. CCHF virus was first discovered in Crimea in 1944 and has since caused a substantial disease burden in Africa. The shortage of diagnostic tools, ineffective tick control efforts, slow adoption of preventive measures, and cultural hurdles to public education are among the problems associated with continued CCHF virus transmission. Progress in preventing virus spread is also hampered by the dearth of effective serodiagnostic testing for animals and absence of precise surveillance protocols. Intergovernmental coordination, creation of regional reference laboratories, multiinstitutional public education partnerships, investments in healthcare infrastructure, vaccine development, and a One Health approach are strategic methods for solving prevention challenges. Coordinated efforts and financial commitments are needed to combat Crimean-Congo hemorrhagic fever and improve all-around readiness for newly developing infectious illnesses in Africa.
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- 2024
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3. Newly Recognized Spotted Fever Group Rickettsia as Cause of Severe Rocky Mountain Spotted Fever–Like Illness, Northern California, USA
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Will S. Probert, Monica P. Haw, Aran C. Nichol, Carol A. Glaser, Sarah Y. Park, Laura E. Campbell, Kavita K. Trivedi, Hannah Romo, Megan E.M. Saunders, Anne M. Kjemtrup, Kerry A. Padgett, and Jill K. Hacker
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vector-borne infections ,bacteria ,spotted fever group Rickettsia ,Rickettsiosis ,Rocky Mountain spotted fever ,ticks ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
The incidence of spotted fever group (SFG) rickettsioses in the United States has tripled since 2010. Rocky Mountain spotted fever, the most severe SFG rickettsiosis, is caused by Rickettsia rickettsii. The lack of species-specific confirmatory testing obfuscates the relative contribution of R. rickettsii and other SFG Rickettsia to this increase. We report a newly recognized rickettsial pathogen, Rickettsia sp. CA6269, as the cause of severe Rocky Mountain spotted fever–like illness in 2 case-patients residing in northern California. Multilocus sequence typing supported the recognition of this pathogen as a novel Rickettsia genotype most closely related to R. rickettsii. Cross-reactivity observed for an established molecular diagnostic test indicated that Rickettsia sp. CA6269 might be misidentified as R. rickettsii. We developed a Rickettsia sp. CA6269–specific real-time PCR to help resolve this diagnostic challenge and better characterize the spectrum of clinical disease and ecologic epidemiology of this pathogen.
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- 2024
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4. Powassan Virus Encephalitis after Tick Bite, Manitoba, Canada
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Nathan Smith, Yoav Keynan, Terry Wuerz, and Aditya Sharma
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ticks ,Ixodes ,meningitis/encephalitis ,virus ,Powassan virus ,tickborne ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
A case of Powassan encephalitis occurred in Manitoba, Canada, after the bite of a black-legged tick. Awareness of this emerging tickborne illness is needed because the number of vector tick species is growing. No specific treatment options exist, and cases with illness and death are high. Prevention is crucial.
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- 2024
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5. Crimean-Congo Hemorrhagic Fever Virus in Ticks Collected from Cattle, Corsica, France, 2023
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Paloma Kiwan, Shirley Masse, Geraldine Piorkowski, Nazli Ayhan, Morena Gasparine, Laurence Vial, Remi N. Charrel, Xavier de Lamballerie, and Alessandra Falchi
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Crimean-Congo hemorrhagic fever virus ,Crimean-Congo hemorrhagic fever ,viruses ,vector-borne infections ,tickborne infections ,ticks ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
We report the detection of Crimean-Congo hemorrhagic fever virus (CCHFV) in Corsica, France. We identified CCHFV African genotype I in ticks collected from cattle at 2 different sites in southeastern and central-western Corsica, indicating an established CCHFV circulation. Healthcare professionals and at-risk groups should be alerted to CCHFV circulation in Corsica.
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- 2024
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6. Powassan Virus Encephalitis after Tick Bite, Manitoba, Canada.
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Smith, Nathan, Keynan, Yoav, Wuerz, Terry, and Sharma, Aditya
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ENCEPHALITIS viruses , *POWASSAN (Disease) , *TICK-borne diseases , *TICKS , *VIRAL encephalitis , *DEATH rate , *LYME disease - Abstract
A case of Powassan encephalitis occurred in Manitoba, Canada, after the bite of a black-legged tick. Awareness of this emerging tickborne illness is needed because the number of vector tick species is growing. No specific treatment options exist, and cases with illness and death are high. Prevention is crucial. [ABSTRACT FROM AUTHOR]
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- 2024
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7. Delayed Diagnosis of Locally Acquired Lyme Disease, Central North Carolina, USA
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Ross M. Boyce, Peyton Pretsch, Kay Tyrlik, Abigail Schulz, Dana A. Giandomenico, Alexis M. Barbarin, and Carl Williams
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Lyme disease ,ticks ,tickborne disease ,vector-borne diseases ,zoonoses ,North Carolina ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
Healthcare providers in North Carolina, USA, have limited experience diagnosing and managing Lyme disease because few cases occur annually statewide. We outline the prolonged diagnostic course for a patient with locally acquired Lyme disease in North Carolina. This case highlights the need for greater awareness and professional education.
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- 2024
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8. Tick-Borne Encephalitis, Lombardy, Italy
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Alessandra Gaffuri, Davide Sassera, Mattia Calzolari, Lucia Gibelli, Davide Lelli, Alessandra Tebaldi, Nadia Vicari, Alessandro Bianchi, Claudio Pigoli, Monica Cerioli, Luca Zandonà, Giorgio Varisco, Irene Bertoletti, and Paola Prati
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Tick-borne encephalitis ,tick-borne encephalitis virus ,Italy ,TBE ,TBEV ,ticks ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
Tick-borne encephalitis was limited to northeast portions of Italy. We report in Lombardy, a populous region in the northwest, a chamois displaying clinical signs of tickborne encephalitis virus that had multiple virus-positive ticks attached, as well as a symptomatic man. Further, we show serologic evidence of viral circulation in the area.
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- 2024
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9. Borrelia turicatae from Ticks in Peridomestic Setting, Camayeca, Mexico
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Edwin Vázquez-Guerrero, Alexander R. Kneubehl, Patricio Pellegrini-Hernández, José Luis González-Quiroz, María Lilia Domínguez-López, Aparna Krishnavajhala, Paulina Estrada-de los Santos, J. Antonio Ibarra, and Job E. Lopez
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Borrelia turicatae ,ticks ,Mexico ,tickborne diseases ,vector-borne infections ,bacteria ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
We conducted surveillance studies in Sinaloa, Mexico, to determine the circulation of tick-borne relapsing fever spirochetes. We collected argasid ticks from a home in the village of Camayeca and isolated spirochetes. Genomic analysis indicated that Borrelia turicatae infection is a threat to those living in resource-limited settings.
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- 2024
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10. Efficacy of Unregulated Minimum Risk Products to Kill and Repel Ticks
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Lars Eisen
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ticks ,efficacy ,toxicants ,repellents ,minimum risk products ,unregulated ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
Human-biting ticks threaten public health in the United States. Registration by the Environmental Protection Agency of products to kill host-seeking ticks or repel ticks contacting humans is indicative of their safety and effectiveness. Unregulated minimum risk products, exempt from Environmental Protection Agency registration and often based on botanical oils, are proliferating in the marketplace, but there is concern about their effectiveness to kill and repel ticks. Evaluations of such products are limited in the published literature. A review showed considerable variability among minimum risk products to kill host-seeking blacklegged ticks, with effectiveness similar to chemical pesticide products for some minimum risk products but minimal impact on the ticks for other products. Evaluations of minimum risk tick repellents have typically focused on individual active ingredients rather than formulated products, which often combine multiple active ingredients. Consumers should be aware that effectiveness to kill and repel ticks can differ among unregulated minimum risk products.
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- 2024
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11. Borrelia turicatae from Ticks in Peridomestic Setting, Camayeca, Mexico.
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Vázquez-Guerrero, Edwin, Kneubehl, Alexander R., Pellegrini-Hernández, Patricio, Luis González-Quiroz, José, Domínguez-López, María Lilia, Krishnavajhala, Aparna, Estrada-de los Santos, Paulina, Antonio Ibarra, J., and Lopez, Job E.
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BORRELIA , *RELAPSING fever , *RESOURCE-limited settings , *TICKS , *GENOMICS - Abstract
We conducted surveillance studies in Sinaloa, Mexico, to determine the circulation of tick-borne relapsing fever spirochetes. We collected argasid ticks from a home in the village of Camayeca and isolated spirochetes. Genomic analysis indicated that Borrelia turicatae infection is a threat to those living in resource-limited settings. [ABSTRACT FROM AUTHOR]
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- 2024
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12. Efficacy of Unregulated Minimum Risk Products to Kill and Repel Ticks.
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Eisen, Lars
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TICKS , *IXODES scapularis , *BASE oils - Abstract
Human-biting ticks threaten public health in the United States. Registration by the Environmental Protection Agency of products to kill host-seeking ticks or repel ticks contacting humans is indicative of their safety and effectiveness. Unregulated minimum risk products, exempt from Environmental Protection Agency registration and often based on botanical oils, are proliferating in the marketplace, but there is concern about their effectiveness to kill and repel ticks. Evaluations of such products are limited in the published literature. A review showed considerable variability among minimum risk products to kill host-seeking blacklegged ticks, with effectiveness similar to chemical pesticide products for some minimum risk products but minimal impact on the ticks for other products. Evaluations of minimum risk tick repellents have typically focused on individual active ingredients rather than formulated products, which often combine multiple active ingredients. Consumers should be aware that effectiveness to kill and repel ticks can differ among unregulated minimum risk products. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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13. Borrelia bavariensis in Questing Ixodes ricinus Ticks, United Kingdom
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Grace Plahe, Jessica L. Hall, David Johnson, Lucy Gilbert, and Richard J. Birtles
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Lyme disease ,Borrelia infections ,Borrelia bavariensis ,ticks ,Ixodes ,bacteria ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
We detected Borrelia bavariensis in Ixodes ricinus ticks collected near 2 towns in the United Kingdom. Human B. bavariensis infections have not been reported previously in the country, underscoring the value of tick surveillance to warn of emerging human disease. B. bavariensis should be considered in patients with suspected neuroborreliosis.
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- 2023
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14. Characteristics of Hard Tick Relapsing Fever Caused by Borrelia miyamotoi, United States, 2013–2019
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David W. McCormick, Catherine M. Brown, Jenna Bjork, Kim Cervantes, Brenda Esponda-Morrison, Jason Garrett, Natalie Kwit, Abigail Mathewson, Charles McGinnis, Marco Notarangelo, Rebecca Osborn, Elizabeth Schiffman, Haris Sohail, Amy M. Schwartz, Alison F. Hinckley, and Kiersten J. Kugeler
- Subjects
hard tick relapsing fever ,Borrelia miyamotoi ,bacteria ,tick-borne infections ,Ixodes scapularis ,ticks ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
Borrelia miyamotoi, transmitted by Ixodes spp. ticks, was recognized as an agent of hard tick relapsing fever in the United States in 2013. Nine state health departments in the Northeast and Midwest have conducted public health surveillance for this emerging condition by using a shared, working surveillance case definition. During 2013–2019, a total of 300 cases were identified through surveillance; 166 (55%) were classified as confirmed and 134 (45%) as possible. Median age of case-patients was 52 years (range 1–86 years); 52% were male. Most cases (70%) occurred during June–September, with a peak in August. Fever and headache were common symptoms; 28% of case-patients reported recurring fevers, 55% had arthralgia, and 16% had a rash. Thirteen percent of patients were hospitalized, and no deaths were reported. Ongoing surveillance will improve understanding of the incidence and clinical severity of this emerging disease.
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- 2023
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15. Candidatus Neoehrlichia mikurensis Infection in Patient with Antecedent Hematologic Neoplasm, Spain
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Paola González-Carmona, Aránzazu Portillo, Cristina Cervera-Acedo, Daniel González-Fernández, and José A. Oteo
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neoehrlichiosis ,Candidatus Neoehrlichia mikurensis ,ticks ,Ixodes ricinus ,lymphoma ,hematologic neoplasm ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
We report a confirmed case of Candidatus Neoehrlichia mikurensis infection in a woman in Spain who had a previous hematologic malignancy. Candidatus N. mikurensis infections should be especially suspected in immunocompromised patients who exhibit persistent fever and venous thrombosis, particularly if they live in environments where ticks are prevalent.
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- 2023
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16. Novel Orthonairovirus Isolated from Ticks near China–North Korea Border
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Fan Li, Jixu Li, Jingdong Song, Qikai Yin, Kai Nie, Songtao Xu, Ying He, Shihong Fu, Guodong Liang, Qiang Wei, and Huanyu Wang
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Orthonairovirus ,viruses ,genetic identification ,morphology ,China–North Korea border ,ticks ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
We isolated a new orthonairovirus from Dermacentor silvarum ticks near the China–North Korea border. Phylogenetic analysis showed 71.9%–73.0% nucleic acid identity to the recently discovered Songling orthonairovirus, which causes febrile illness in humans. We recommend enhanced surveillance for infection by this new virus among humans and livestock.
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- 2023
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17. Bacterial Agents Detected in 418 Ticks Removed from Humans during 2014–2021, France
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Marie Jumpertz, Jacques Sevestre, Léa Luciani, Linda Houhamdi, Pierre-Edouard Fournier, and Philippe Parola
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ticks ,bacteria ,parasites ,Rickettsia ,vector-borne infections ,zoonoses ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
Monitoring of tickborne diseases is critical for prevention and management. We analyzed 418 ticks removed from 359 patients during 2014–2021 in Marseille, France, for identification and bacteria detection. Using morphology, molecular methods, or matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, we identified 197 (47%) Ixodes, 136 (33%) Dermacentor, 67 (16%) Rhipicephalus, 8 (2%) Hyalomma, 6 (1%) Amblyomma, 2 (0.5%) Argas, and 2 (0.5%) Haemaphysalis tick species. We also detected bacterial DNA in 241 (58%) ticks. The most frequent bacterial pathogens were Rickettsia raoultii (17%) and R. slovaca (13%) in Dermacentor ticks, Borrelia spp. (9%) in Ixodes ticks, and R. massiliae (16%) in Rhipicephalus ticks. Among patients who were bitten, 107 had symptoms, and tickborne diseases were diagnosed in 26, including scalp eschar and neck lymphadenopathy after tick bite and Lyme borrelioses. Rapid tick and bacteria identification using a combination of methods can substantially contribute to clinical diagnosis, treatment, and surveillance of tickborne diseases.
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- 2023
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18. Yezo Virus Infection in Tick-Bitten Patient and Ticks, Northeastern China
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Xiaolong Lv, Ziyan Liu, Liang Li, Wenbo Xu, Yongxu Yuan, Xiaojie Liang, Li Zhang, Zhengkai Wei, Liyan Sui, Yinghua Zhao, Zhijun Hou, Feng Wei, Shuzhen Han, Quan Liu, and Zedong Wang
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Yezo virus ,viruses ,infection ,tick-bitten patient ,ticks ,Ixodes persulcatus ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
We identified Yezo virus infection in a febrile patient who had a tick bite in northeastern China, where 0.5% of Ixodes persulcatus ticks were positive for viral RNA. Clinicians should be aware of this potential health threat and include this emerging virus in the differential diagnosis for tick-bitten patients in this region.
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- 2023
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19. Anaplasma bovis–Like Infections in Humans, United States, 2015–2017.
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Karpathy, Sandor E., Kingry, Luke, Pritt, Bobbi S., Berry, Jonathan C., Chilton, Neil B., Dergousoff, Shaun J., Cortinas, Roberto, Sheldon, Sarah W., Oatman, Stephanie, Anacker, Melissa, Petersen, Jeannine, and Paddock, Christopher D.
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ANAPLASMOSIS , *TICK-borne diseases , *DERMACENTOR , *ANAPLASMA , *TICKS - Abstract
We detected the DNA of an Anaplasma bovis–like bacterium in blood specimens from 4 patients from the United States with suspected tickborne illnesses. Initial molecular characterization of this novel agent reveals identity to A. bovis–like bacteria detected in Dermacentor variabilis ticks collected from multiple US states. [ABSTRACT FROM AUTHOR]
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- 2023
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20. Bourbon Virus Transmission, New York, USA
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Alan P. Dupuis, Melissa A. Prusinski, Collin O’Connor, Joseph G. Maffei, Cheri A. Koetzner, Tela E. Zembsch, Steven D. Zink, Alexis L. White, Michael P. Santoriello, Christopher L. Romano, Guang Xu, Fumiko Ribbe, Scott R. Campbell, Stephen M. Rich, P. Bryon Backenson, Laura D. Kramer, and Alexander T. Ciota
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Bourbon virus ,viruses ,BRBV ,ticks ,white-tailed deer ,vector-borne infections ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
In July 2019, Bourbon virus RNA was detected in an Amblyomma americanum tick removed from a resident of Long Island, New York, USA. Tick infection and white-tailed deer (Odocoileus virginianus) serosurvey results demonstrate active transmission in New York, especially Suffolk County, emphasizing a need for surveillance anywhere A. americanum ticks are reported.
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- 2023
- Full Text
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21. Borrelia bavariensis in Questing Ixodes ricinus Ticks, United Kingdom.
- Author
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Plahe, Grace, Hall, Jessica L., Johnson, David, Gilbert, Lucy, and Birtle, Richard J.
- Subjects
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CASTOR bean tick , *BORRELIA , *TICKS , *LYME neuroborreliosis - Abstract
We detected Borrelia bavariensis in Ixodes ricinus ticks collected near 2 towns in the United Kingdom. Human B. bavariensis infections have not been reported previously in the country, underscoring the value of tick surveillance to warn of emerging human disease. B. bavariensis should be considered in patients with suspected neuroborreliosis. [ABSTRACT FROM AUTHOR]
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- 2023
- Full Text
- View/download PDF
22. Bacterial Agents Detected in 418 Ticks Removed from Humans during 2014-2021, France.
- Author
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Jumpertz, Marie, Sevestre, Jacques, Luciani, Léa, Houhamdi, Linda, Fournier, Pierre-Edouard, and Parola, Philippe
- Subjects
- *
TICKS , *LYME disease , *TIME-of-flight mass spectrometry , *TICK-borne diseases , *TICK infestations , *BACTERIAL DNA , *DERMACENTOR - Abstract
Monitoring of tickborne diseases is critical for prevention and management. We analyzed 418 ticks removed from 359 patients during 2014-2021 in Marseille, France, for identification and bacteria detection. Using morphology, molecular methods, or matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, we identified 197 (47%) Ixodes, 136 (33%) Dermacentor, 67 (16%) Rhipicephalus, 8 (2%) Hyalomma, 6 (1%) Amblyomma, 2 (0.5%) Argas, and 2 (0.5%) Haemaphysalis tick species. We also detected bacterial DNA in 241 (58%) ticks. The most frequent bacterial pathogens were Rickettsia raoultii (17%) and R. slovaca (13%) in Dermacentor ticks, Borrelia spp. (9%) in Ixodes ticks, and R. massiliae (16%) in Rhipicephalus ticks. Among patients who were bitten, 107 had symptoms, and tickborne diseases were diagnosed in 26, including scalp eschar and neck lymphadenopathy after tick bite and Lyme borrelioses. Rapid tick and bacteria identification using a combination of methods can substantially contribute to clinical diagnosis, treatment, and surveillance of tickborne diseases. [ABSTRACT FROM AUTHOR]
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- 2023
- Full Text
- View/download PDF
23. Powassan Virus Lineage I in Field-Collected Dermacentor variabilis Ticks, New York, USA
- Author
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Charles Hart, Erin Hassett, Chantal B.F. Vogels, Daniel Shapley, Nathan D. Grubaugh, and Saravanan Thangamani
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Powassan virus ,Dermacentor variabilis ,dog tick ,vector-borne infections ,New York ,ticks ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
Powassan virus is a tickborne flavivirus that can cause lethal or debilitating neurologic illness. It is canonically transmitted by Ixodes spp. ticks but might spill over to sympatric Dermacentor species. We detected Powassan virus lineage I from a pool of field-collected D. variabilis ticks in New York, USA.
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- 2023
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24. Spiroplasma ixodetis Infections in Immunocompetent and Immunosuppressed Patients after Tick Exposure, Sweden
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Johannes Eimer, Louise Fernström, Louise Rohlén, Anna Grankvist, Kristoffer Loo, Erik Nyman, Anna J. Henningsson, Mats Haglund, Viktor Hultqvist, Johanna Sjöwall, Christine Wennerås, and Thomas Schön
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Spiroplasma ixodetis ,bacteria ,Anaplasma phagocytophilum ,ticks ,tick-borne infections ,doxycycline ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
We report 2 cases of Spiroplasma ixodetis infection in an immunocompetent patient and an immunocompromised patient who had frequent tick exposure. Fever, thrombocytopenia, and increased liver aminotransferase levels raised the suspicion of anaplasmosis, but 16S rRNA PCR and Sanger sequencing yielded a diagnosis of spiroplasmosis. Both patients recovered after doxycycline treatment.
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- 2022
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25. Deaths from Tick-Borne Encephalitis, Sweden
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Renata Varnaitė, Sara Gredmark-Russ, and Jonas Klingström
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tick-borne encephalitis ,TBE ,ticks ,case-fatality rate ,standardized mortality ratio ,vector-borne infections ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
We assessed standardized mortality ratio in tick-borne encephalitis (TBE) in Sweden, 2004–2017. Standardized mortality ratio for TBE was 3.96 (95% CI 2.55–5.90); no cases in patients
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- 2022
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26. Associations of Anaplasma phagocytophilum Bacteria Variants in Ixodes scapularis Ticks and Humans, New York, USA.
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Prusinski, Melissa, O’Connor, Collin, Russell, Alexis, Sommer, Jamie, White, Jennifer, Rose, Lauren, Falco, Richard, Kokas, John, Vinci, Vanessa, Gall, Wayne, Tober, Keith, Haight, Jamie, Oliver, JoAnne, Meehan, Lisa, Sporn, Lee Ann, Brisson, Dustin, and Bryon Backenson, P.
- Subjects
- *
ANAPLASMA phagocytophilum , *IXODES scapularis , *TICKS , *ANAPLASMOSIS , *SPATIAL ecology , *BACTERIA - Abstract
Anaplasmosis, caused by the tickborne bacterium Anaplasma phagocytophilum, is an emerging public health threat in the United States. In the northeastern United States, the blacklegged tick (Ixodes scapularis) transmits the human pathogenic genetic variant of A. phagocytophilum (Ap-ha) and a nonpathogenic variant (Ap-V1). New York has recently experienced a rapid and geographically focused increase in cases of anaplasmosis. We analyzed A. phagocytophilum–infected I. scapularis ticks collected across New York during 2008–2020 to differentiate between variants and calculate an entomological risk index (ERI) for each. Ap-ha ERI varied between regions and increased in all regions during the final years of the study. Space-time scan analyses detected expanding clusters of Ap-ha located within documented anaplasmosis hotspots. Ap-ha ERI was more positively correlated with anaplasmosis incidence than non-genotyped A. phagocytophilum ERI. Our findings help elucidate the relationship between the spatial ecology of A. phagocytophilum variants and anaplasmosis. [ABSTRACT FROM AUTHOR]
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- 2023
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27. Relapsing Fever Caused by Borrelia lonestari after Tick Bite in Alabama, USA.
- Author
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Guillamet, Laia J. Vazquez, Marx, Grace E., Benjamin, William, Pappas, Peter, Lieberman, Nicole A. P., Bachiashvili, Kimo, Leal, Sixto, and Lieberman, Joshua A.
- Subjects
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RELAPSING fever , *BORRELIA , *TICKS , *MOLECULAR diagnosis , *IMMUNOCOMPROMISED patients - Abstract
We report an immunocompromised patient in Alabama, USA, 75 years of age, with relapsing fevers and pancytopenia who had spirochetemia after a tick bite. We identified Borrelia lonestari by using PCR, sequencing, and phylogenetic analysis. Increasing clinical availability of molecular diagnostics might identify B. lonestari as an emerging tickborne pathogen. [ABSTRACT FROM AUTHOR]
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- 2023
- Full Text
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28. Bourbon Virus Transmission, New York, USA.
- Author
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Dupuis II, Alan P., Prusinski, Melissa A., O'Connor, Collin, Maffei, Joseph G., Koetzner, Cheri A., Zembsch, Tela E., Zink, Steven D., White, Alexis L., Santoriello, Michael P., Romano, Christopher L., Guang Xu, Ribbe, Fumiko, Campbell, Scott R., Rich, Stephen M., Backenson, P. Bryon, Kramer, Laura D., and Ciota, Alexander T.
- Subjects
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WHITE-tailed deer , *RNA viruses , *AMBLYOMMA , *TICKS , *DEER - Abstract
In July 2019, Bourbon virus RNA was detected in an Amblyomma americanum tick removed from a resident of Long Island, New York, USA. Tick infection and whitetailed deer (Odocoileus virginianus) serosurvey results demonstrate active transmission in New York, especially Suffolk County, emphasizing a need for surveillance anywhere A. americanum ticks are reported. [ABSTRACT FROM AUTHOR]
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- 2023
- Full Text
- View/download PDF
29. Effects of Tick-Control Interventions on Tick Abundance, Human Encounters with Ticks, and Incidence of Tickborne Diseases in Residential Neighborhoods, New York, USA
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Felicia Keesing, Stacy Mowry, William Bremer, Shannon Duerr, Andrew S. Evans, Ilya R. Fischhoff, Alison F. Hinckley, Sarah A. Hook, Fiona Keating, Jennifer Pendleton, Ashley Pfister, Marissa Teator, and Richard S. Ostfeld
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tickborne disease ,Lyme disease ,ticks ,Ixodes scapularis ,prevention ,vector-borne infections ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
Tickborne diseases (TBDs) such as Lyme disease result in ≈500,000 diagnoses annually in the United States. Various methods can reduce the abundance of ticks at small spatial scales, but whether these methods lower incidence of TBDs is poorly understood. We conducted a randomized, replicated, fully crossed, placebo-controlled, masked experiment to test whether 2 environmentally safe interventions, the Tick Control System (TCS) and Met52 fungal spray, used separately or together, affected risk for and incidence of TBDs in humans and pets in 24 residential neighborhoods. All participating properties in a neighborhood received the same treatment. TCS was associated with fewer questing ticks and fewer ticks feeding on rodents. The interventions did not result in a significant difference in incidence of human TBDs but did significantly reduce incidence in pets. Our study is consistent with previous evidence suggesting that reducing tick abundance in residential areas might not reduce incidence of TBDs in humans.
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- 2022
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30. Lack of Evidence for Crimean–Congo Hemorrhagic Fever Virus in Ticks Collected from Animals, Corsica, France
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Vincent Cicculli, Apolline Maitre, Nazli Ayhan, Stevan Mondoloni, Jean-Christophe Paoli, Laurence Vial, Xavier N. de Lamballerie, Remi Charrel, and Alessandra Falchi
- Subjects
Crimean–Congo hemorrhagic fever ,ticks ,tickborne disease ,Nairovirus ,Corsica ,France ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
In Corsica, France, 9.1% of livestock serum samples collected during 2014–2016 were found to have antibodies against Crimean–Congo hemorrhagic fever virus (CCHFV), an emerging tickborne zoonotic disease. We tested 8,051 ticks for CCHFV RNA and Nairovirus RNA. The results indicate that Corsica is not a hotspot for CCHFV.
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- 2022
- Full Text
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31. Transovarial Transmission of Heartland Virus by Invasive Asian Longhorned Ticks under Laboratory Conditions
- Author
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Wilson R. Raney, Josiah B. Perry, and Meghan E. Hermance
- Subjects
Heartland virus ,Dabie bandavirus ,Haemaphysalis longicornis ,ticks ,invasive species ,severe fever with thrombocytopenia syndrome virus ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
We demonstrated experimental acquisition and transmission of Heartland bandavirus by Haemaphysalis longicornis ticks. Virus was detected in tick salivary gland and midgut tissues. A total of 80% of mice exposed to 1 infected tick seroconverted, suggesting horizontal transmission. H. longicornis ticks can transmit the virus in the transovarial mode.
- Published
- 2022
- Full Text
- View/download PDF
32. Rapid Spread of Severe Fever with Thrombocytopenia Syndrome Virus by Parthenogenetic Asian Longhorned Ticks
- Author
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Xing Zhang, Chaoyue Zhao, Chaoyuan Cheng, Guogang Zhang, Tao Yu, Kevin Lawrence, Hongyue Li, Jimin Sun, Zeyu Yang, Ling Ye, Hongliang Chu, Ying Wang, Xiaohu Han, Yongchao Jia, Shuozhang Fan, Hirotaka Kanuka, Tetsuya Tanaka, Cheryl Jenkins, Kristene Gedye, Shona Chandra, Dana C. Price, Qiyong Liu, Young Ki Choi, Xiangjiang Zhan, Zhibin Zhang, and Aihua Zheng
- Subjects
severe fever with thrombocytopenia syndrome virus ,SFTSV ,severe fever with thrombocytopenia syndrome ,SFTS ,ticks ,Asian longhorned ticks ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
Severe fever with thrombocytopenia syndrome virus (SFTSV) is spreading rapidly in Asia. This virus is transmitted by the Asian longhorned tick (Haemaphysalis longicornis), which has parthenogenetically and sexually reproducing populations. Parthenogenetic populations were found in ≥15 provinces in China and strongly correlated with the distribution of severe fever with thrombocytopenia syndrome cases. However, distribution of these cases was poorly correlated with the distribution of populations of bisexual ticks. Phylogeographic analysis suggested that the parthenogenetic population spread much faster than bisexual population because colonization is independent of sexual reproduction. A higher proportion of parthenogenetic ticks was collected from migratory birds captured at an SFTSV-endemic area, implicating the contribution to the long-range movement of these ticks in China. The SFTSV susceptibility of parthenogenetic females was similar to that of bisexual females under laboratory conditions. These results suggest that parthenogenetic Asian longhorned ticks, probably transported by migratory birds, play a major role in the rapid spread of SFTSV.
- Published
- 2022
- Full Text
- View/download PDF
33. Molecular Confirmation of Rocky Mountain Spotted Fever Epidemic Agent in Mexicali, Mexico - Volume 24, Number 9—September 2018 - Emerging Infectious Diseases journal - CDC
- Author
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Tinoco-Gracia, Luis, Lomelí, Moisés Rodríguez, Hori-Oshima, Sawako, Stephenson, Nicole, and Foley, Janet
- Subjects
Vaccine Related ,Prevention ,Biodefense ,Emerging Infectious Diseases ,Infectious Diseases ,Rare Diseases ,Vector-Borne Diseases ,Good Health and Well Being ,Adolescent ,Adult ,Animals ,Dogs ,Female ,Humans ,Male ,Mexico ,Rhipicephalus sanguineus ,Rickettsia rickettsii ,Rocky Mountain Spotted Fever ,Young Adult ,Mexicali ,bacteria ,emerging infectious disease ,rickettsia ,tick-borne disease ,ticks ,vector-borne infections ,Clinical Sciences ,Medical Microbiology ,Public Health and Health Services ,Microbiology - Abstract
Since 2008, a large epidemic of Rocky Mountain spotted fever has been emerging among humans and dogs in Mexicali, adjacent to the United States in Baja California, Mexico. We molecularly confirmed the causative agent; this information can be used to study the origin and dynamics of the epidemic.
- Published
- 2018
34. Rickettsia africae and Novel Rickettsial Strain in Amblyomma spp. Ticks, Nicaragua, 2013 - Volume 24, Number 2—February 2018 - Emerging Infectious Diseases journal - CDC
- Author
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Vogel, Helena, Foley, Janet, and Fiorello, Christine V
- Subjects
Biomedical and Clinical Sciences ,Epidemiology ,Health Services and Systems ,Clinical Sciences ,Health Sciences ,Infectious Diseases ,Biodefense ,Emerging Infectious Diseases ,Orphan Drug ,Vaccine Related ,Vector-Borne Diseases ,Prevention ,Rare Diseases ,Good Health and Well Being ,Animals ,Dog Diseases ,Dogs ,Ixodidae ,Nicaragua ,Rickettsia ,Spotted Fever Group Rickettsiosis ,Tick Infestations ,Amblyomma spp. ,Rickettsia africae ,bacteria ,dogs ,ompA ,rickettsiae ,ticks ,vector-borne infections ,Medical Microbiology ,Public Health and Health Services ,Microbiology ,Clinical sciences ,Health services and systems - Abstract
We report molecular detection of Rickettsia africae in Amblyomma ovale ticks from Nicaragua and a novel rickettsial strain in an A. triste tick. Of 146 ticks from dogs, 16.4% were Rickettsia PCR positive. The presence of Rickettsia spp. in human-biting ticks in Nicaragua may pose a public health concern.
- Published
- 2018
35. Heartland Virus Transmission, Suffolk County, New York, USA
- Author
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Alan P. Dupuis, Melissa A. Prusinski, Collin O’Connor, Joseph G. Maffei, Kiet A. Ngo, Cheri A. Koetzner, Michael P. Santoriello, Christopher L. Romano, Guang Xu, Fumiko Ribbe, Scott R. Campbell, Stephen M. Rich, P. Bryon Backenson, Laura D. Kramer, and Alexander T. Ciota
- Subjects
Heartland virus ,HRTV ,arboviruses ,viruses ,ticks ,white-tailed deer ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
During 2018, Heartland virus RNA was detected in an Amblyomma americanum tick removed from a resident of Suffolk County, New York, USA. The person showed seroconversion. Tick surveillance and white-tailed deer (Odocoileus virginianus) serosurveys showed widespread distribution in Suffolk County, emphasizing a need for disease surveillance anywhere A. americanum ticks are established or emerging.
- Published
- 2021
- Full Text
- View/download PDF
36. Detection of Endosymbiont Candidatus Midichloria mitochondrii and Tickborne Pathogens in Humans Exposed to Tick Bites, Italy.
- Author
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Sgroi, Giovanni, Iatta, Roberta, Lovreglio, Piero, Stufano, Angela, Laidoudi, Younes, Mendoza-Roldan, Jairo Alfonso, Bezerra-Santos, Marcos Antonio, Veneziano, Vincenzo, Di Gennaro, Francesco, Saracino, Annalisa, Chironna, Maria, Bandi, Claudio, and Otranto, Domenico
- Subjects
- *
BITES & stings , *BIOLOGICAL evolution , *RICKETTSIA , *TICKS - Abstract
During 2021, we collected blood and serum samples from 135 persons exposed to tick bites in southern Italy. We serologically and molecularly screened for zoonotic tickborne pathogens and only molecularly screened for Candidatus Midichloria mitochondrii. Overall, 62 (45.9%) persons tested positive for tickborne pathogens. Coxiella burnetii was detected most frequently (27.4%), along with Rickettsia spp. (21.5%) and Borrelia spp. (10.4%). We detected Candidatus M. mitochondrii DNA in 46 (34.1%) participants who had statistically significant associations to tickborne pathogens (p<0.0001). Phylogenetic analysis of Candidatus M. mitochondrii sequences revealed 5 clades and 8 human sequence types that correlated with vertebrates, Ixodes spp. ticks, and countries in Europe. These data demonstrated a high circulation of tickborne pathogens and Candidatus M. mitochondrii DNA in persons participating in outdoor activities in southern Italy. Our study shows how coordinated surveillance among patients, clinicians, and veterinarians could inform a One Health approach for monitoring and controlling the circulation of tickborne pathogens. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
37. Spiroplasma ixodetis Infections in Immunocompetent and Immunosuppressed Patients after Tick Exposure, Sweden.
- Author
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Eimer, Johannes, Fernström, Louise, Rohlén, Louise, Grankvist, Anna, Loo, Kristoffer, Nyman, Erik, Henningsson, Anna J., Haglund, Mats, Hultqvist, Viktor, Sjöwall, Johanna, Wennerås, Christine, and Schön, Thomas
- Subjects
- *
BITES & stings , *GRAM-negative bacteria , *IMMUNOCOMPROMISED patients , *RNA , *TICKS , *GRAM-negative bacterial diseases , *ANIMALS - Abstract
We report 2 cases of Spiroplasma ixodetis infection in an immunocompetent patient and an immunocompromised patient who had frequent tick exposure. Fever, thrombocytopenia, and increased liver aminotransferase levels raised the suspicion of anaplasmosis, but 16S rRNA PCR and Sanger sequencing yielded a diagnosis of spiroplasmosis. Both patients recovered after doxycycline treatment. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
38. Deaths from Tick-Borne Encephalitis, Sweden.
- Author
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Varnaitė, Renata, Gredmark-Russ, Sara, and Klingström, Jonas
- Subjects
- *
IMMUNIZATION , *EPIDEMIC encephalitis , *FLAVIVIRUSES - Abstract
We assessed standardized mortality ratio in tick-borne encephalitis (TBE) in Sweden, 2004-2017. Standardized mortality ratio for TBE was 3.96 (95% CI 2.55-5.90); no cases in patients <40 years of age were fatal. These results underscore the need for further vaccination efforts in populations at risk for TBE. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
39. Autochthonous Human Babesiosis Caused by Babesia venatorum, the Netherlands.
- Author
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Spoorenberg N, Köhler CF, Vermeulen E, Jurriaans S, Cornelissen M, Persson KEM, van Doorn I, Sprong H, Hovius JW, and Zonneveld R
- Subjects
- Humans, Netherlands, Animals, Male, Splenectomy, Middle Aged, Ixodes parasitology, Babesiosis diagnosis, Babesiosis parasitology, Babesia genetics, Babesia isolation & purification, Babesia classification
- Abstract
Severe babesiosis with 9.8% parasitemia was diagnosed in a patient in the Netherlands who had previously undergone splenectomy. We confirmed Babesia venatorum using PCR and sequencing. B. venatorum was also the most prevalent species in Ixodes ricinus ticks collected around the patient's home. Our findings warrant awareness for severe babesiosis in similar patients.
- Published
- 2024
- Full Text
- View/download PDF
40. Electronic Health Record Data for Lyme Disease Surveillance, Massachusetts, USA, 2017-2018.
- Author
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Nagavedu K, Eberhardt K, Willis S, Morrison M, Ochoa A, Soliva S, Scotland S, Cocoros NM, Callahan M, Randall LM, Brown CM, and Klompas M
- Subjects
- Humans, Massachusetts epidemiology, Population Surveillance, Algorithms, History, 21st Century, Lyme Disease epidemiology, Electronic Health Records
- Abstract
Lyme disease surveillance based on provider and laboratory reports underestimates incidence. We developed an algorithm for automating surveillance using electronic health record data. We identified potential Lyme disease markers in electronic health record data (laboratory tests, diagnosis codes, prescriptions) from January 2017-December 2018 in 2 large practice groups in Massachusetts, USA. We calculated their sensitivities and positive predictive values (PPV), alone and in combination, relative to medical record review. Sensitivities ranged from 57% (95% CI 47%-69%) for immunoassays to 87% (95% CI 70%-100%) for diagnosis codes. PPVs ranged from 53% (95% CI 43%-61%) for diagnosis codes to 58% (95% CI 50%-66%) for immunoassays. The combination of a diagnosis code and antibiotics within 14 days or a positive Western blot had a sensitivity of 100% (95% CI 86%-100%) and PPV of 82% (95% CI 75%-89%). This algorithm could make Lyme disease surveillance more efficient and consistent.
- Published
- 2024
- Full Text
- View/download PDF
41. Rickettsia parkeri Rickettsiosis in Kidney Transplant Recipient, North Carolina, USA, 2023.
- Author
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Phadke GM, Gajurel K, Kasten J, DeLeon-Carnes M, Ramos C, Karpathy SE, Gleaton AN, Adams SN, Annambhotla PD, Basavaraju SV, Williams C, and Paddock CD
- Subjects
- Humans, North Carolina, Male, Transplant Recipients, Middle Aged, Anti-Bacterial Agents therapeutic use, Female, Kidney Transplantation adverse effects, Rickettsia genetics, Rickettsia isolation & purification, Rickettsia Infections diagnosis, Rickettsia Infections microbiology
- Abstract
Spotted fever rickettsiosis is rarely observed in solid organ transplant recipients, and all previously reported cases have been associated with tick bite months to years after transplantation. We describe a kidney transplant recipient in North Carolina, USA, who had a moderately severe Rickettsia parkeri infection develop during the immediate posttransplant period.
- Published
- 2024
- Full Text
- View/download PDF
42. Looking Beyond the Lens of Crimean-Congo Hemorrhagic Fever in Africa.
- Author
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Okesanya OJ, Olatunji GD, Kokori E, Olaleke NO, Adigun OA, Manirambona E, and Lucero-Prisno DE 3rd
- Subjects
- Humans, Africa epidemiology, Animals, Ticks virology, Hemorrhagic Fever, Crimean epidemiology, Hemorrhagic Fever, Crimean diagnosis, Hemorrhagic Fever, Crimean transmission, Hemorrhagic Fever Virus, Crimean-Congo isolation & purification
- Abstract
Crimean-Congo hemorrhagic fever (CCHF) is a lethal viral disease that has severe public health effects throughout Africa and a case fatality rate of 10%-40%. CCHF virus was first discovered in Crimea in 1944 and has since caused a substantial disease burden in Africa. The shortage of diagnostic tools, ineffective tick control efforts, slow adoption of preventive measures, and cultural hurdles to public education are among the problems associated with continued CCHF virus transmission. Progress in preventing virus spread is also hampered by the dearth of effective serodiagnostic testing for animals and absence of precise surveillance protocols. Intergovernmental coordination, creation of regional reference laboratories, multiinstitutional public education partnerships, investments in healthcare infrastructure, vaccine development, and a One Health approach are strategic methods for solving prevention challenges. Coordinated efforts and financial commitments are needed to combat Crimean-Congo hemorrhagic fever and improve all-around readiness for newly developing infectious illnesses in Africa.
- Published
- 2024
- Full Text
- View/download PDF
43. Newly Recognized Spotted Fever Group Rickettsia as Cause of Severe Rocky Mountain Spotted Fever-Like Illness, Northern California, USA.
- Author
-
Probert WS, Haw MP, Nichol AC, Glaser CA, Park SY, Campbell LE, Trivedi KK, Romo H, Saunders MEM, Kjemtrup AM, Padgett KA, and Hacker JK
- Subjects
- Humans, California epidemiology, Male, Female, Middle Aged, Spotted Fever Group Rickettsiosis diagnosis, Spotted Fever Group Rickettsiosis microbiology, Spotted Fever Group Rickettsiosis epidemiology, Adult, Rickettsia rickettsii genetics, Rocky Mountain Spotted Fever diagnosis, Rocky Mountain Spotted Fever microbiology, Rocky Mountain Spotted Fever epidemiology, Rickettsia genetics, Rickettsia isolation & purification, Rickettsia classification, Multilocus Sequence Typing, Phylogeny
- Abstract
The incidence of spotted fever group (SFG) rickettsioses in the United States has tripled since 2010. Rocky Mountain spotted fever, the most severe SFG rickettsiosis, is caused by Rickettsia rickettsii. The lack of species-specific confirmatory testing obfuscates the relative contribution of R. rickettsii and other SFG Rickettsia to this increase. We report a newly recognized rickettsial pathogen, Rickettsia sp. CA6269, as the cause of severe Rocky Mountain spotted fever-like illness in 2 case-patients residing in northern California. Multilocus sequence typing supported the recognition of this pathogen as a novel Rickettsia genotype most closely related to R. rickettsii. Cross-reactivity observed for an established molecular diagnostic test indicated that Rickettsia sp. CA6269 might be misidentified as R. rickettsii. We developed a Rickettsia sp. CA6269-specific real-time PCR to help resolve this diagnostic challenge and better characterize the spectrum of clinical disease and ecologic epidemiology of this pathogen.
- Published
- 2024
- Full Text
- View/download PDF
44. Acute Meningoencephalitis Associated with Borrelia miyamotoi, Minnesota, USA.
- Author
-
Kubiak JM, Klevay M, Hilt EE, and Ferrieri P
- Subjects
- Humans, Minnesota epidemiology, Male, Borrelia Infections diagnosis, Borrelia Infections microbiology, Borrelia Infections drug therapy, Borrelia Infections complications, Anti-Bacterial Agents therapeutic use, Middle Aged, Acute Disease, Female, Borrelia isolation & purification, Borrelia genetics, Meningoencephalitis microbiology, Meningoencephalitis diagnosis
- Abstract
Borrelia miyamotoi is an emerging tickborne pathogen that has been associated with central nervous system infections in immunocompromised patients, albeit infrequently. We describe a case-patient in Minnesota, USA, who had meningeal symptoms of 1 month duration. B. miyamotoi infection was diagnosed by Gram staining on cerebrospinal fluid and confirmed by sequencing.
- Published
- 2024
- Full Text
- View/download PDF
45. Rare Case of Rickettsiosis Caused by Rickettsia monacensis, Portugal, 2021.
- Author
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de Sousa, Rita, dos Santos, Marta Leal, Cruz, Claudina, Almeida, Vasco, Garrote, Ana Raquel, Ramirez, Freddy, Seixas, Diana, Manata, Maria J., and Maltez, Fernando
- Subjects
- *
RICKETTSIAL diseases , *RICKETTSIA , *TICKS , *ANIMALS ,RICKETTSIAL disease diagnosis - Abstract
We report a case of rickettsiosis caused by Rickettsia monacensis in an immunocompetent 67-year-old man in Portugal who had eschar, erythematous rash, and an attached Ixodes ricinus tick. Seroconversion and eschar biopsy led to confirmed diagnosis by PCR. Physicians should be aware of this rare rickettsiosis, especially in geographic regions with the vector. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
46. Lack of Evidence for Crimean-Congo Hemorrhagic Fever Virus in Ticks Collected from Animals, Corsica, France.
- Author
-
Cicculli, Vincent, Maitre, Apolline, Ayhan, Nazli, Mondoloni, Stevan, Paoli, Jean-Christophe, Vial, Laurence, de Lamballerie, Xavier N., Charrel, Remi, and Falchi, Alessandra
- Abstract
In Corsica, France, 9.1% of livestock serum samples collected during 2014-2016 were found to have antibodies against Crimean-Congo hemorrhagic fever virus (CCHFV), an emerging tickborne zoonotic disease. We tested 8,051 ticks for CCHFV RNA and Nairovirus RNA. The results indicate that Corsica is not a hotspot for CCHFV. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
47. Effects of Tick-Control Interventions on Tick Abundance, Human Encounters with Ticks, and Incidence of Tickborne Diseases in Residential Neighborhoods, New York, USA.
- Author
-
Keesing, Felicia, Mowry, Stacy, Bremer, William, Duerr, Shannon, Evans Jr., Andrew S., Fischhoff, Ilya R., Hinckley, Alison F., Hook, Sarah A., Keating, Fiona, Pendleton, Jennifer, Pfister, Ashley, Teator, Marissa, Ostfeld, Richard S., and Evans, Andrew S Jr
- Subjects
- *
LYME disease prevention , *TICK-borne diseases , *PEST control , *LYME disease , *DISEASE incidence , *TICKS , *ANIMALS - Abstract
Tickborne diseases (TBDs) such as Lyme disease result in ≈500,000 diagnoses annually in the United States. Various methods can reduce the abundance of ticks at small spatial scales, but whether these methods lower incidence of TBDs is poorly understood. We conducted a randomized, replicated, fully crossed, placebo-controlled, masked experiment to test whether 2 environmentally safe interventions, the Tick Control System (TCS) and Met52 fungal spray, used separately or together, affected risk for and incidence of TBDs in humans and pets in 24 residential neighborhoods. All participating properties in a neighborhood received the same treatment. TCS was associated with fewer questing ticks and fewer ticks feeding on rodents. The interventions did not result in a significant difference in incidence of human TBDs but did significantly reduce incidence in pets. Our study is consistent with previous evidence suggesting that reducing tick abundance in residential areas might not reduce incidence of TBDs in humans. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
48. Isolation of Heartland Virus from Lone Star Ticks, Georgia, USA, 2019.
- Author
-
Romer, Yamila, Adcock, Kayla, Zhuoran Wei, Mead, Daniel G., Kirstein, Oscar, Bellman, Steph, Piantadosi, Anne, Kitron, Uriel, Vazquez-Prokopec, Gonzalo M., and Wei, Zhuoran
- Abstract
Report of a human death and exposure of white-tailed deer to Heartland virus (HRTV) in Georgia, USA, prompted the sampling of questing ticks during 2018-2019 in 26 sites near where seropositive deer were captured and the residence of the human case-patient. We processed 9,294 Amblyomma americanum ticks in pools by virus isolation in Vero E6 cells and reverse transcription PCR. Positive pools underwent whole-genome sequencing. Three pools were positive for HRTV (minimum infection rate 0.46/1,000 ticks) and none for Bourbon virus. Cell cultures confirmed HRTV presence in 2 pools. Genome sequencing, achieved for the 3 HRTV isolates, showed high similarity among samples but marked differences with previously sequenced HRTV isolates. The isolation and genomic characterization of HRTV from A. americanum ticks in Georgia confirm virus presence in the state. Clinicians and public health professionals should be aware of this emerging tickborne pathogen. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
49. Powassan Virus Lineage I in Field-Collected Dermacentor variabilis Ticks, New York, USA.
- Author
-
Hart, Charles, Hassett, Erin, Vogels, Chantal B. F., Shapley, Daniel, Grubaugh, Nathan D., and Thangamani, Saravanan
- Subjects
- *
DERMACENTOR , *TICKS , *IXODES , *FLAVIVIRUSES , *SPECIES - Abstract
Powassan virus is a tickborne flavivirus that can cause lethal or debilitating neurologic illness. It is canonically transmitted by Ixodes spp. ticks but might spill over to sympatric Dermacentor species. We detected Powassan virus lineage I from a pool of field-collected D. variabilis ticks in New York, USA. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
50. Unique Strain of Borrelia miyamotoi in Ixodes pacificus Ticks, California, USA.
- Author
-
Cook, Vanessa J, Fedorova, Natalia, Macdonald, Warren P, Lane, Robert S, and Barbour, Alan G
- Subjects
Animals ,Humans ,Ixodes ,Borrelia ,Lyme Disease ,Arachnid Vectors ,Phylogeny ,Genes ,Bacterial ,California ,Multilocus Sequence Typing ,Borrelia miyamotoi ,Ixodes pacificus ,United States ,bacteria ,ticks ,vector-borne infections ,zoonoses ,Genes ,Bacterial ,Microbiology ,Medical Microbiology ,Public Health and Health Services ,Clinical Sciences - Published
- 2016
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