Pub Date : 2024-11-01DOI: 10.1016/j.ttbdis.2024.102418
Ana Cláudia Norte , El-Mustapha Laghzaoui , Andreia Guerreiro-Nunes , El Hassan El Mouden , Maria Sofia Núncio , Rita de Sousa , Isabel Lopes de Carvalho
Tick-borne pathogens are a worldwide threat to public health that can only be mitigated by knowledge on tick-host associations coupled with surveillance of their infection by pathogenic microorganisms. This information is not equally available throughout tick vector distribution range and is deficient in some geographical areas. In this study we did a molecular survey of tick-borne pathogens associated with different tick species in Morocco. We analyzed four different species of Hyalomma (Hyalomma aegyptium, Hyalomma anatolicum, Hyalomma dromedarii and Hyalomma impeltatum) and Rhipicephalus sanguineus sensu lato ticks from four vertebrate hosts and from the vegetation. The most common tick species collected was H. aegyptium feeding on Testudo graeca tortoises, followed by H. anatolicum from the vegetation. Hyalomma aegyptium feeding on T. graeca was found infected with Borrelia turcica, representing the first detection for Western North Africa, and Rickettsia sibirica mongolitimonae, also detected for the first time in Morocco. Rickettsia aeschlimannii was also detected in H. aegyptium feeding on T. graeca. Additionally, R. aeschlimannii was detected in H. anatolicum from the vegetation, and Rickettsia massiliae in R. sanguineus s.l. from an Algerian hedgehog Atelix algirus. Because H. aegyptium are common parasites of T. graeca tortoises, and these animals are subjected to pet trade, it is important to evaluate the associated human health risks through regular surveillance and perform awareness campaigns for prevention of the general public.
{"title":"Molecular investigation of tick-borne pathogens from different regions of Morocco","authors":"Ana Cláudia Norte , El-Mustapha Laghzaoui , Andreia Guerreiro-Nunes , El Hassan El Mouden , Maria Sofia Núncio , Rita de Sousa , Isabel Lopes de Carvalho","doi":"10.1016/j.ttbdis.2024.102418","DOIUrl":"10.1016/j.ttbdis.2024.102418","url":null,"abstract":"<div><div>Tick-borne pathogens are a worldwide threat to public health that can only be mitigated by knowledge on tick-host associations coupled with surveillance of their infection by pathogenic microorganisms. This information is not equally available throughout tick vector distribution range and is deficient in some geographical areas. In this study we did a molecular survey of tick-borne pathogens associated with different tick species in Morocco. We analyzed four different species of <em>Hyalomma</em> (<em>Hyalomma aegyptium, Hyalomma anatolicum, Hyalomma dromedarii</em> and <em>Hyalomma impeltatum</em>) and <em>Rhipicephalus sanguineus</em> sensu lato ticks from four vertebrate hosts and from the vegetation. The most common tick species collected was <em>H. aegyptium</em> feeding on <em>Testudo graeca</em> tortoises, followed by <em>H. anatolicum</em> from the vegetation. <em>Hyalomma aegyptium</em> feeding on <em>T. graeca</em> was found infected with <em>Borrelia turcica</em>, representing the first detection for Western North Africa, and <em>Rickettsia sibirica</em> mongolitimonae, also detected for the first time in Morocco. <em>Rickettsia aeschlimannii</em> was also detected in <em>H. aegyptium</em> feeding on <em>T. graeca</em>. Additionally, <em>R. aeschlimannii</em> was detected in <em>H. anatolicum</em> from the vegetation, and <em>Rickettsia massiliae</em> in <em>R. sanguineus</em> s.l. from an Algerian hedgehog <em>Atelix algirus</em>. Because <em>H. aegyptium</em> are common parasites of <em>T. graeca</em> tortoises, and these animals are subjected to pet trade, it is important to evaluate the associated human health risks through regular surveillance and perform awareness campaigns for prevention of the general public.</div></div>","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"15 6","pages":"Article 102418"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142744979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.ttbdis.2024.102421
Anna Kloc , Angelina Wójcik-Fatla , Piotr Paprzycki , Lech Panasiuk
Research on the transovarial transmission of pathogens whose reservoirs and vectors are ticks has led to an understanding of the mechanisms related to the circulation and persistence of selected microorganisms in natural foci. The primary aim of this study was to investigate the possibility of transovarial transmission of Rickettsia spp. in Dermacentor reticulatus ticks, and the influence of Francisella-like endosymbionts (FLEs) and Spiroplasma spp. on the efficiency of the egg-laying process and transmission of selected pathogens.
In total, 16,600 eggs were obtained under laboratory conditions from 55 females, with an average of 346 eggs per female. Adults, eggs, and hatched larvae were tested using polymerase chain reaction (PCR) for the presence of Rickettsia and endosymbionts.
DNA fragments of Rickettsia spp. were found in females (56.4 %) and in pools of eggs (72.9 %) and larvae (62.4 %). FLEs and Spiroplasma endosymbionts were confirmed in females (80 % and 14.5 %, respectively), pools of eggs (81.6 % and 26.1 %, respectively), and larvae (82.7 % and 46.2 %, respectively). Transovarial transmission was confirmed in Rickettsia raoultii, FLEs, and Spiroplasma ixodetis. No correlation was observed between the occurrence of individual endosymbionts and the efficiency of egg laying and transovarial transmission in Rickettsia spp.
In conclusion, transovarial transmission of Rickettsia spp., FLEs and Spiroplasma spp. in D. reticulatus plays an important role in their persistence and circulation in the environment. However, further research is required on this topic.
{"title":"Transovarial transmission of Rickettsia spp., Francisella-like endosymbionts, and Spiroplasma spp. in Dermacentor reticulatus ticks","authors":"Anna Kloc , Angelina Wójcik-Fatla , Piotr Paprzycki , Lech Panasiuk","doi":"10.1016/j.ttbdis.2024.102421","DOIUrl":"10.1016/j.ttbdis.2024.102421","url":null,"abstract":"<div><div>Research on the transovarial transmission of pathogens whose reservoirs and vectors are ticks has led to an understanding of the mechanisms related to the circulation and persistence of selected microorganisms in natural foci. The primary aim of this study was to investigate the possibility of transovarial transmission of <em>Rickettsia</em> spp. in <em>Dermacentor reticulatus</em> ticks, and the influence of <em>Francisella</em>-like endosymbionts (FLEs) and <em>Spiroplasma</em> spp. on the efficiency of the egg-laying process and transmission of selected pathogens.</div><div>In total, 16,600 eggs were obtained under laboratory conditions from 55 females, with an average of 346 eggs per female. Adults, eggs, and hatched larvae were tested using polymerase chain reaction (PCR) for the presence of <em>Rickettsia</em> and endosymbionts.</div><div>DNA fragments of <em>Rickettsia</em> spp. were found in females (56.4 %) and in pools of eggs (72.9 %) and larvae (62.4 %). FLEs and <em>Spiroplasma</em> endosymbionts were confirmed in females (80 % and 14.5 %, respectively), pools of eggs (81.6 % and 26.1 %, respectively), and larvae (82.7 % and 46.2 %, respectively). Transovarial transmission was confirmed in <em>Rickettsia raoultii</em>, FLEs, and <em>Spiroplasma ixodetis</em>. No correlation was observed between the occurrence of individual endosymbionts and the efficiency of egg laying and transovarial transmission in <em>Rickettsia</em> spp.</div><div>In conclusion, transovarial transmission of <em>Rickettsia</em> spp., FLEs and <em>Spiroplasma</em> spp. in <em>D. reticulatus</em> plays an important role in their persistence and circulation in the environment. However, further research is required on this topic.</div></div>","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"15 6","pages":"Article 102421"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142796371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.ttbdis.2024.102415
Joris Koetsveld , Alex Wagemakers , Matthijs Brouwer , Bob de Wever , Ankje de Vries , Steven van Gucht , Anita Buskermolen , Diederik van Beek , Hein Sprong , Joppe W. Hovius
Ixodes ricinus is the main vector of the causative agents of Lyme neuroborreliosis. This tick species can also transmit tick-borne encephalitis virus (TBEV), spotted fever group (SFG) Rickettsia and Borrelia miyamotoi to humans. These tick-borne pathogens are present in Dutch ticks and have also been associated with human neurological infections, but well characterized disease cases are seldom reported. We therefore assessed the evidence for TBEV, SFG Rickettsia or B. miyamotoi infection in clinically well-described patients suspected of Lyme neuroborreliosis.
We retrospectively included patients with specific predefined clinical criteria from patients that were tested for Lyme neuroborreliosis between 2010 and 2014 at an academic Lyme borreliosis Center. Serology was performed on available serum samples, and cerebrospinal fluid (CSF) was tested by molecular methods.
Out of 514 potentially eligible patients, 176 individual patients were included. None of CSF samples was positive for the tested tick-borne pathogens, except for one previously described patient with Borrelia miyamotoi disease (BMD). Serology revealed 27, 14 and three patients with antibodies against SFG Rickettsia, B. miyamotoi and TBEV, respectively. No distinctive clinical symptoms or signs could be associated with seropositivity against any of these tick-borne pathogens.
Apart from the previously published BMD case, we were unable to find convincing evidence of new cases of tick-borne encephalitis, spotted fever rickettsiosis or BMD in a cohort of patients suspected of Lyme neuroborreliosis. While antibodies against these tick-borne pathogens were detected, we could not associate these findings to clinical symptoms or signs. Therefore, prospective studies on humans with tick exposure are necessary to describe the prevalence, etiology and clinical symptoms of these tick-borne diseases other than Lyme borreliosis and tick-borne encephalitis.
{"title":"Limited evidence of infection with other tick-borne pathogens in patients tested for Lyme neuroborreliosis in the Netherlands","authors":"Joris Koetsveld , Alex Wagemakers , Matthijs Brouwer , Bob de Wever , Ankje de Vries , Steven van Gucht , Anita Buskermolen , Diederik van Beek , Hein Sprong , Joppe W. Hovius","doi":"10.1016/j.ttbdis.2024.102415","DOIUrl":"10.1016/j.ttbdis.2024.102415","url":null,"abstract":"<div><div><em>Ixodes ricinus</em> is the main vector of the causative agents of Lyme neuroborreliosis. This tick species can also transmit tick-borne encephalitis virus (TBEV), spotted fever group (SFG) <em>Rickettsia</em> and <em>Borrelia miyamotoi</em> to humans<em>.</em> These tick-borne pathogens are present in Dutch ticks and have also been associated with human neurological infections, but well characterized disease cases are seldom reported. We therefore assessed the evidence for TBEV, SFG <em>Rickettsia</em> or <em>B. miyamotoi</em> infection in clinically well-described patients suspected of Lyme neuroborreliosis.</div><div>We retrospectively included patients with specific predefined clinical criteria from patients that were tested for Lyme neuroborreliosis between 2010 and 2014 at an academic Lyme borreliosis Center. Serology was performed on available serum samples, and cerebrospinal fluid (CSF) was tested by molecular methods.</div><div>Out of 514 potentially eligible patients, 176 individual patients were included. None of CSF samples was positive for the tested tick-borne pathogens, except for one previously described patient with <em>Borrelia miyamotoi</em> disease (BMD). Serology revealed 27, 14 and three patients with antibodies against SFG <em>Rickettsia, B. miyamotoi</em> and TBEV, respectively. No distinctive clinical symptoms or signs could be associated with seropositivity against any of these tick-borne pathogens.</div><div>Apart from the previously published BMD case, we were unable to find convincing evidence of new cases of tick-borne encephalitis, spotted fever rickettsiosis or BMD in a cohort of patients suspected of Lyme neuroborreliosis. While antibodies against these tick-borne pathogens were detected, we could not associate these findings to clinical symptoms or signs. Therefore, prospective studies on humans with tick exposure are necessary to describe the prevalence, etiology and clinical symptoms of these tick-borne diseases other than Lyme borreliosis and tick-borne encephalitis.</div></div>","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"15 6","pages":"Article 102415"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142693768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.ttbdis.2024.102393
Olaf Kahl , Ben Mans , Ard Nijhof
{"title":"New rules for the submission of review articles to Ticks and Tick-borne Diseases","authors":"Olaf Kahl , Ben Mans , Ard Nijhof","doi":"10.1016/j.ttbdis.2024.102393","DOIUrl":"10.1016/j.ttbdis.2024.102393","url":null,"abstract":"","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"15 6","pages":"Article 102393"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142299401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.ttbdis.2024.102414
Olaf Kahl , Ben Mans , Ard M. Nijhof
{"title":"Editorial Board reshuffle at Ticks and Tick-borne Diseases","authors":"Olaf Kahl , Ben Mans , Ard M. Nijhof","doi":"10.1016/j.ttbdis.2024.102414","DOIUrl":"10.1016/j.ttbdis.2024.102414","url":null,"abstract":"","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"15 6","pages":"Article 102414"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142693765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.ttbdis.2024.102416
Austin R. Earley , Kiersten J. Kugeler , Paul S. Mead , Alison F. Hinckley
Tick-borne diseases are commonly reported in the United States, but frequency of tick bites and care-seeking behaviors following tick bites are poorly understood. We used nationally representative survey data to describe the frequency of tick bites among people living in the United States and how often, where, and why care-seeking associated with tick bites occurs. We found that over 31 million people (nearly 1 in 10) living in the United States might experience a tick bite each year and highlight regional trends in associated care-seeking behaviors. These findings emphasize the need for effective tick bite prevention education and regionally tailored healthcare provider recommendations for management of tick-borne diseases.
{"title":"Frequency of tick bites and associated care-seeking behaviors in the United States","authors":"Austin R. Earley , Kiersten J. Kugeler , Paul S. Mead , Alison F. Hinckley","doi":"10.1016/j.ttbdis.2024.102416","DOIUrl":"10.1016/j.ttbdis.2024.102416","url":null,"abstract":"<div><div>Tick-borne diseases are commonly reported in the United States, but frequency of tick bites and care-seeking behaviors following tick bites are poorly understood. We used nationally representative survey data to describe the frequency of tick bites among people living in the United States and how often, where, and why care-seeking associated with tick bites occurs. We found that over 31 million people (nearly 1 in 10) living in the United States might experience a tick bite each year and highlight regional trends in associated care-seeking behaviors. These findings emphasize the need for effective tick bite prevention education and regionally tailored healthcare provider recommendations for management of tick-borne diseases.</div></div>","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"15 6","pages":"Article 102416"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142744924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.ttbdis.2024.102408
Cierra Briggs , Drew Casey , Anna Grace Deakins , Jeremy G. Powell , Kelly Loftin , Emily G. McDermott
Panola Mountain Ehrlichia (PME) is an emerging zoonotic pathogen, transmitted by Amblyomma americanum ticks in the southeastern United States. It is closely related to Ehrlichia ruminantium, the causative agent of heartwater disease. Heartwater disease is an often-fatal illness of ruminant livestock present in Africa and the Caribbean. The taxonomic relationship between PME and E. ruminantium has raised concerns about the pathogenicity of PME in livestock. To determine whether cattle could be naturally infected with PME in an endemic area, we conducted a one-year longitudinal study of Angus-breed beef calves in Fayetteville, Arkansas. One hundred seventy-seven calves born between September and October 2022 were sampled for blood and ticks in February, May, and September 2023. Blood and ticks from each animal were tested for bacteria in the family, Anaplasmataceae using quantitative and conventional PCR, and positive samples were sequenced for species identification. Panola Mountain Ehrlichia was detected in 2.34 % of male A. americanum collected in February, and 1.27 % of female, 0.95 % of male, and 0.43 % of nymphal A. americanum collected in May. No PME-positive ticks were collected in September. Active PME infections were detected in two calves: one which tested positive in May 2023 and one which tested positive in September 2023. Neither animal exhibited any signs of disease, and the animal PME-positive in May tested negative in September. Cattle are susceptible to PME, but the pathogen does not appear to cause obvious disease. However, all animals in this study were under one year old, and older animals may be more susceptible. Cattle are at risk of tick-borne illness in the winter as well as spring, and off-season acaricide applications may improve disease management.
{"title":"Natural Panola Mountain Ehrlichia infections in cattle in a longitudinal study of Angus beef calves","authors":"Cierra Briggs , Drew Casey , Anna Grace Deakins , Jeremy G. Powell , Kelly Loftin , Emily G. McDermott","doi":"10.1016/j.ttbdis.2024.102408","DOIUrl":"10.1016/j.ttbdis.2024.102408","url":null,"abstract":"<div><div>Panola Mountain <em>Ehrlichia</em> (PME) is an emerging zoonotic pathogen, transmitted by <em>Amblyomma americanum</em> ticks in the southeastern United States. It is closely related to <em>Ehrlichia ruminantium</em>, the causative agent of heartwater disease. Heartwater disease is an often-fatal illness of ruminant livestock present in Africa and the Caribbean. The taxonomic relationship between PME and <em>E. ruminantium</em> has raised concerns about the pathogenicity of PME in livestock. To determine whether cattle could be naturally infected with PME in an endemic area, we conducted a one-year longitudinal study of Angus-breed beef calves in Fayetteville, Arkansas. One hundred seventy-seven calves born between September and October 2022 were sampled for blood and ticks in February, May, and September 2023. Blood and ticks from each animal were tested for bacteria in the family, <em>Anaplasmataceae</em> using quantitative and conventional PCR, and positive samples were sequenced for species identification. Panola Mountain <em>Ehrlichia</em> was detected in 2.34 % of male <em>A. americanum</em> collected in February, and 1.27 % of female, 0.95 % of male, and 0.43 % of nymphal <em>A. americanum</em> collected in May. No PME-positive ticks were collected in September. Active PME infections were detected in two calves: one which tested positive in May 2023 and one which tested positive in September 2023. Neither animal exhibited any signs of disease, and the animal PME-positive in May tested negative in September. Cattle are susceptible to PME, but the pathogen does not appear to cause obvious disease. However, all animals in this study were under one year old, and older animals may be more susceptible. Cattle are at risk of tick-borne illness in the winter as well as spring, and off-season acaricide applications may improve disease management.</div></div>","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"15 6","pages":"Article 102408"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142607034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.ttbdis.2024.102417
Johanna Rapp, Andrea Springer, Christina Strube
Climate-change induced weather extremes like floods are increasing in frequency and intensity, with potential consequences for disease vector ecology. We report on a flooding event during the winter of 2023/2024 in Hanover city, Germany. Our observations demonstrate that I. ricinus, the most important vector of tick-borne diseases in Europe, can survive prolonged periods under water and quickly resume host-seeking activity once conditions normalize. Despite being submerged for a total of 25 days, nymphal and adult ticks were observed questing four weeks of the water receding, with densities comparable to pre-flood levels. These findings underscore the resilience of I. ricinus and highlight the potential of ticks to pose infection risks even after extreme weather events.
{"title":"Ixodes ricinus ticks survive flooding","authors":"Johanna Rapp, Andrea Springer, Christina Strube","doi":"10.1016/j.ttbdis.2024.102417","DOIUrl":"10.1016/j.ttbdis.2024.102417","url":null,"abstract":"<div><div>Climate-change induced weather extremes like floods are increasing in frequency and intensity, with potential consequences for disease vector ecology. We report on a flooding event during the winter of 2023/2024 in Hanover city, Germany. Our observations demonstrate that <em>I. ricinus</em>, the most important vector of tick-borne diseases in Europe, can survive prolonged periods under water and quickly resume host-seeking activity once conditions normalize. Despite being submerged for a total of 25 days, nymphal and adult ticks were observed questing four weeks of the water receding, with densities comparable to pre-flood levels. These findings underscore the resilience of <em>I. ricinus</em> and highlight the potential of ticks to pose infection risks even after extreme weather events.</div></div>","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"15 6","pages":"Article 102417"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142697216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.ttbdis.2024.102376
Lars Eisen , Jeremy Gray , Olaf Kahl , Per-Eric Lindgren , Åke Lundkvist , John H.-O. Pettersson , Peter Wilhelmsson
{"title":"Tribute to Prof. Dr. Thomas Gustav Tore Jaenson, Uppsala University, Sweden","authors":"Lars Eisen , Jeremy Gray , Olaf Kahl , Per-Eric Lindgren , Åke Lundkvist , John H.-O. Pettersson , Peter Wilhelmsson","doi":"10.1016/j.ttbdis.2024.102376","DOIUrl":"10.1016/j.ttbdis.2024.102376","url":null,"abstract":"","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"15 6","pages":"Article 102376"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141690868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.ttbdis.2024.102413
Camille Guillot , Jérôme Pelletier , Cécile Aenishaenslin , Heather Coatsworth , Antonia Dibernardo , Jules K. Koffi , Manisha A. Kulkarni , Jean-Philippe Rocheleau , Christy Wilson , Curtis Russell , Mark P. Nelder , Jacqueline Badcock , Justin Carr , Sylvia Checkley , Katie M. Clow , Stephanie Cooper , Susan Cork , Ariane Dumas , Shaun Dergousoff , Nicoletta Faraone , Catherine Bouchard
Ixodes scapularis and Ixodes pacificus are vectors of a range of pathogens of public health significance in North America. These ticks transmit pathogens to and from wild animal reservoir host species, but also bite humans and expose them to the pathogens. We describe the geographical and temporal distribution of the pathogen Babesia odocoilei, the causative agent of cervid babesiosis. Ixodes spp. ticks collected through active and passive surveillance were submitted to the National Microbiology Laboratory of the Public Health Agency of Canada for analysis of the presence of B. odocoilei from 2018 to 2021. Generalized linear models were constructed to evaluate the temporal change of B. odocoilei prevalence across Canada. Babesia odocoilei-positive I. scapularis are widespread across south-central and eastern regions of Canada, with an overall prevalence of 12.0 % in both nymphs (CI 95 % : 11.4–12.6) and adults (CI 95 % : 11.9–12.1) collected in passive surveillance and 13.2 % (CI 95 % : 12.9–13.5) and 10.0 % (CI 95 % : 9.8–10.2) in nymphs and adult, respectively, collected in active surveillance. A single I. pacificus tick tested positive in active surveillance out of 29 ticks collected in British Columbia, while no B odocoilei-positive I. scapularis were found in passive surveillance among the 11 adult ticks tested. Although B. odocoilei infection prevalence of adult I. scapularis was significantly higher in 2019 (14.1 %) than in 2018 (7.4 %), it remained stable from 2019 to 2021, suggesting that this pathogen may already be well established in endemic tick populations. The results provided in this article represent, to date, the most comprehensive picture of B. odocoilei distribution and prevalence in ticks in Canada and highlight the interest of maintaining One Health surveillance approaches to give added insight into disease transmission cycles for less well-characterized microorganisms.
{"title":"The distribution of Babesia odocoilei in Ixodes species ticks in Canada: Implications for one health surveillance","authors":"Camille Guillot , Jérôme Pelletier , Cécile Aenishaenslin , Heather Coatsworth , Antonia Dibernardo , Jules K. Koffi , Manisha A. Kulkarni , Jean-Philippe Rocheleau , Christy Wilson , Curtis Russell , Mark P. Nelder , Jacqueline Badcock , Justin Carr , Sylvia Checkley , Katie M. Clow , Stephanie Cooper , Susan Cork , Ariane Dumas , Shaun Dergousoff , Nicoletta Faraone , Catherine Bouchard","doi":"10.1016/j.ttbdis.2024.102413","DOIUrl":"10.1016/j.ttbdis.2024.102413","url":null,"abstract":"<div><div><em>Ixodes scapularis</em> and <em>Ixodes pacificus</em> are vectors of a range of pathogens of public health significance in North America. These ticks transmit pathogens to and from wild animal reservoir host species, but also bite humans and expose them to the pathogens. We describe the geographical and temporal distribution of the pathogen <em>Babesia odocoilei</em>, the causative agent of cervid babesiosis. <em>Ixodes</em> spp. ticks collected through active and passive surveillance were submitted to the National Microbiology Laboratory of the Public Health Agency of Canada for analysis of the presence of <em>B. odocoilei</em> from 2018 to 2021<em>.</em> Generalized linear models were constructed to evaluate the temporal change of <em>B. odocoilei</em> prevalence across Canada. <em>Babesia odocoilei</em>-positive <em>I. scapularis</em> are widespread across south-central and eastern regions of Canada, with an overall prevalence of 12.0 % in both nymphs (CI 95 % : 11.4–12.6) and adults (CI 95 % : 11.9–12.1) collected in passive surveillance and 13.2 % (CI 95 % : 12.9–13.5) and 10.0 % (CI 95 % : 9.8–10.2) in nymphs and adult, respectively, collected in active surveillance. A single <em>I. pacificus</em> tick tested positive in active surveillance out of 29 ticks collected in British Columbia, while no <em>B odocoilei</em>-positive <em>I. scapularis</em> were found in passive surveillance among the 11 adult ticks tested. Although <em>B. odocoilei</em> infection prevalence of adult <em>I. scapularis</em> was significantly higher in 2019 (14.1 %) than in 2018 (7.4 %), it remained stable from 2019 to 2021, suggesting that this pathogen may already be well established in endemic tick populations. The results provided in this article represent, to date, the most comprehensive picture of <em>B. odocoilei</em> distribution and prevalence in ticks in Canada and highlight the interest of maintaining One Health surveillance approaches to give added insight into disease transmission cycles for less well-characterized microorganisms.</div></div>","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"15 6","pages":"Article 102413"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142689337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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