Pub Date : 2026-01-01Epub Date: 2026-01-19DOI: 10.1016/j.ttbdis.2025.102601
Jongyoun Yi , Chang-Ki Kim , Ahreum Kim , Changhoon Kim , Maengseok Noh , Mee Kyung Ko , Hyun Jin Son , Kye-Hyung Kim
Objectives
Severe fever with thrombocytopenia syndrome (SFTS) is a tick-borne viral disease with a high fatality rate and is endemic to East Asia. This study aimed to estimate the seroprevalence of SFTS virus (SFTSV) antibodies in South Korea and analyze regional and demographic variations to guide public health strategies.
Methods
We conducted a cross-sectional study using 12,684 residual serum samples from clinics in 17 administrative regions (July 2019–June 2020) using a double-antigen sandwich enzyme-linked immunosorbent assay. Crude and standardized seroprevalence was calculated, and trends were assessed using generalized additive mixed models.
Results
The overall crude seroprevalence was 1.63 % and was higher among older adults, particularly those aged 80–99 years (3.03 %). Jeju (2.99 %) and Gangwon (2.28 %) Provinces had the highest standardized seroprevalence. SFTSV seroprevalence did not differ significantly by sex or urban-rural status but was higher in agricultural regions, suggesting occupational exposure as a risk factor.
Conclusions
This nationwide estimate of SFTSV seroprevalence highlights high-risk groups, particularly older adults. These findings provide a baseline for surveillance and targeted interventions to mitigate SFTS risk and inform public health strategies in East Asia.
{"title":"Nationwide seroprevalence of severe fever with thrombocytopenia syndrome virus in South Korea: Regional patterns and public health implications","authors":"Jongyoun Yi , Chang-Ki Kim , Ahreum Kim , Changhoon Kim , Maengseok Noh , Mee Kyung Ko , Hyun Jin Son , Kye-Hyung Kim","doi":"10.1016/j.ttbdis.2025.102601","DOIUrl":"10.1016/j.ttbdis.2025.102601","url":null,"abstract":"<div><h3>Objectives</h3><div>Severe fever with thrombocytopenia syndrome (SFTS) is a tick-borne viral disease with a high fatality rate and is endemic to East Asia. This study aimed to estimate the seroprevalence of SFTS virus (SFTSV) antibodies in South Korea and analyze regional and demographic variations to guide public health strategies.</div></div><div><h3>Methods</h3><div>We conducted a cross-sectional study using 12,684 residual serum samples from clinics in 17 administrative regions (July 2019–June 2020) using a double-antigen sandwich enzyme-linked immunosorbent assay. Crude and standardized seroprevalence was calculated, and trends were assessed using generalized additive mixed models.</div></div><div><h3>Results</h3><div>The overall crude seroprevalence was 1.63 % and was higher among older adults, particularly those aged 80–99 years (3.03 %). Jeju (2.99 %) and Gangwon (2.28 %) Provinces had the highest standardized seroprevalence. SFTSV seroprevalence did not differ significantly by sex or urban-rural status but was higher in agricultural regions, suggesting occupational exposure as a risk factor.</div></div><div><h3>Conclusions</h3><div>This nationwide estimate of SFTSV seroprevalence highlights high-risk groups, particularly older adults. These findings provide a baseline for surveillance and targeted interventions to mitigate SFTS risk and inform public health strategies in East Asia.</div></div>","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"17 1","pages":"Article 102601"},"PeriodicalIF":3.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146013091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-01Epub Date: 2025-10-30DOI: 10.1016/j.ttbdis.2025.102561
Oda E. van den Berg, Margriet G. Harms, Anna D. Tulen, Vanessa D. Brown, Jan van de Kassteele, Agnetha Hofhuis, Cees C. van den Wijngaard
Lyme borreliosis (LB) is a prevalent vector-borne disease in Europe. Untreated, it can cause severe complications, with some patients experiencing persistent symptoms post-treatment. In the Netherlands, tick bite consultations and erythema migrans (EM) diagnoses tripled from 1994 to 2009, but tick bite consultations declined and EM diagnoses stabilized in 2014. This study examines trends in tick bite consultations, EM diagnoses, and other LB manifestations in the Netherlands from 2014 onward.
In 2017 and 2021, questionnaires were sent to Dutch GPs to collect data on tick bite consultations and EM diagnoses. The 2021 survey additionally addressed disseminated LB and persistent symptoms attributed to LB. Data were analyzed using a negative binomial distribution, with bootstrapping applied to account for uncertainty.
The population coverage was 51 % in 2017 and 32 % in 2021. The incidence of tick bite consultations per 100,000 was 534 (518–551) in 2017 and 447 (426–470) in 2021. The incidence of EM diagnoses per 100,000 was 150 (145–155) in 2017 and 147 (140–154) in 2021. In 2021, the incidence was 5.0 (4.2–5.9) per 100,000 for disseminated LB and 5.0 (4.4–5.5) per 100,000 for persisting symptoms attributed to LB.
Compared to 2014, GP consultations for tick bites and EM diagnoses had increased in 2017. In 2021, tick bite consultations were lower than in 2017, likely due to COVID-19 restrictions. EM diagnoses were similar to 2017. Disseminated LB was lower in 2021 compared to 2010, whilst persisting symptoms attributed to LB remained stable.
{"title":"Trends in incidence of tick bites and physician-reported early and late Lyme borreliosis in the Netherlands","authors":"Oda E. van den Berg, Margriet G. Harms, Anna D. Tulen, Vanessa D. Brown, Jan van de Kassteele, Agnetha Hofhuis, Cees C. van den Wijngaard","doi":"10.1016/j.ttbdis.2025.102561","DOIUrl":"10.1016/j.ttbdis.2025.102561","url":null,"abstract":"<div><div>Lyme borreliosis (LB) is a prevalent vector-borne disease in Europe. Untreated, it can cause severe complications, with some patients experiencing persistent symptoms post-treatment. In the Netherlands, tick bite consultations and erythema migrans (EM) diagnoses tripled from 1994 to 2009, but tick bite consultations declined and EM diagnoses stabilized in 2014. This study examines trends in tick bite consultations, EM diagnoses, and other LB manifestations in the Netherlands from 2014 onward.</div><div>In 2017 and 2021, questionnaires were sent to Dutch GPs to collect data on tick bite consultations and EM diagnoses. The 2021 survey additionally addressed disseminated LB and persistent symptoms attributed to LB. Data were analyzed using a negative binomial distribution, with bootstrapping applied to account for uncertainty.</div><div>The population coverage was 51 % in 2017 and 32 % in 2021. The incidence of tick bite consultations per 100,000 was 534 (518–551) in 2017 and 447 (426–470) in 2021. The incidence of EM diagnoses per 100,000 was 150 (145–155) in 2017 and 147 (140–154) in 2021. In 2021, the incidence was 5.0 (4.2–5.9) per 100,000 for disseminated LB and 5.0 (4.4–5.5) per 100,000 for persisting symptoms attributed to LB.</div><div>Compared to 2014, GP consultations for tick bites and EM diagnoses had increased in 2017. In 2021, tick bite consultations were lower than in 2017, likely due to COVID-19 restrictions. EM diagnoses were similar to 2017. Disseminated LB was lower in 2021 compared to 2010, whilst persisting symptoms attributed to LB remained stable.</div></div>","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"16 6","pages":"Article 102561"},"PeriodicalIF":3.4,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145423341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Equine piroplasmosis is a major tick-borne horse disease, caused by the intracellular development of piroplasms (Theileria equi sensu lato and Babesia caballi), with significant economic and sanitary consequences. In 2024, 203 blood samples were collected in Guadeloupe (Caribbean) from asymptomatic horses. Using an 18S rRNA nested PCR (nPCR) specific for each equine genus parasite, 79 samples tested positive for Theileria equi and 9 for Babesia caballi, resulting in respective prevalence of 38.9% and 4.4%. Three horses were co-infected. For B. caballi, 18S rRNA sequence analysis revealed the presence of the genotype A only. For T. equi, the genotypes A and C were evidenced as mono-infections A (16/79, 20.3% of the infected horses) or mono-infections C (15/79, 19.0% of the infected horses). Interestingly, mono-infections with T. equi genotype E (17/79, 21.5% of the infected horses) were also detected, but only on horses imported from Europe and especially from metropolitan France, where this genotype is dominant. Further characterization using published T. equi ema-1 and T. haneyi specific nPCRs revealed two major points. First, most 18S rRNA genotype C isolates (13/15) were detected using the T. haneyi specific nPCR. Second, the genotype E of T. equi could not be detected by any of these two nPCRs. Co-infection occurrence and types were then evaluated using a combination of the three analyses: 18S rRNA sequencing, T. haneyi specific nPCR and T. equi ema-1 nPCR. Horses co-infected with the genotypes A and C (T. haneyi) represented the main population (32/79, 40.5% of the infected horses), while the co-infections AE (5/79, 6.3% of the horses) and CE (2/79, 2.5% of the horses) were rare. One horse was detected with a triple infection ACE. Taking into account all detected genotypes (120), 45.0% of the isolates belonged to the genotype A (54/120), 38.3% to the genotype C T. haneyi (46/120) and 16.7% to the Eurasian genotype E (20/120). The rarity of co-infections with the genotype E and the absence of this genotype on locally born horses suggest the absence of transmission of the genotype E by locally present vector ticks.
This work represents the first molecular record of Theileria haneyi in South and Central America and in the Caribbeans. We also demonstrate the introduction of T. equi genotype E from Europe with infected horses but not its installation, as well as a diagnostic issue to detect this genotype using PCR targeting ema-1 gene.
{"title":"Genetic diversity of equine piroplasmosis agents in Guadeloupe (Caribbeans): first report of Theileria haneyi, evaluation of diagnostic tools and impact of horse movement","authors":"Mickaël Mège , Claire Bonsergent , Laetitia Viry , Mélanie Dhune , Sylvie Lecollinet , Laurence Malandrin","doi":"10.1016/j.ttbdis.2025.102547","DOIUrl":"10.1016/j.ttbdis.2025.102547","url":null,"abstract":"<div><div>Equine piroplasmosis is a major tick-borne horse disease, caused by the intracellular development of piroplasms (<em>Theileria equi</em> sensu lato and <em>Babesia caballi</em>), with significant economic and sanitary consequences. In 2024, 203 blood samples were collected in Guadeloupe (Caribbean) from asymptomatic horses. Using an 18S rRNA nested PCR (nPCR) specific for each equine genus parasite, 79 samples tested positive for <em>Theileria equi</em> and 9 for <em>Babesia caballi</em>, resulting in respective prevalence of 38.9% and 4.4%. Three horses were co-infected. For <em>B. caballi</em>, 18S rRNA sequence analysis revealed the presence of the genotype A only. For <em>T. equi,</em> the genotypes A and C were evidenced as mono-infections A (16/79, 20.3% of the infected horses) or mono-infections C (15/79, 19.0% of the infected horses). Interestingly, mono-infections with <em>T. equi</em> genotype E (17/79, 21.5% of the infected horses) were also detected, but only on horses imported from Europe and especially from metropolitan France, where this genotype is dominant. Further characterization using published <em>T. equi ema-1</em> and <em>T. haneyi</em> specific nPCRs revealed two major points. First, most 18S rRNA genotype C isolates (13/15) were detected using the <em>T. haneyi</em> specific nPCR. Second, the genotype E of <em>T. equi</em> could not be detected by any of these two nPCRs. Co-infection occurrence and types were then evaluated using a combination of the three analyses: 18S rRNA sequencing, <em>T. haneyi</em> specific nPCR and <em>T. equi ema-1</em> nPCR. Horses co-infected with the genotypes A and C (<em>T. haneyi</em>) represented the main population (32/79, 40.5% of the infected horses), while the co-infections AE (5/79, 6.3% of the horses) and CE (2/79, 2.5% of the horses) were rare. One horse was detected with a triple infection ACE. Taking into account all detected genotypes (120), 45.0% of the isolates belonged to the genotype A (54/120), 38.3% to the genotype C <em>T. haneyi</em> (46/120) and 16.7% to the Eurasian genotype E (20/120). The rarity of co-infections with the genotype E and the absence of this genotype on locally born horses suggest the absence of transmission of the genotype E by locally present vector ticks.</div><div>This work represents the first molecular record of <em>Theileria haneyi</em> in South and Central America and in the Caribbeans. We also demonstrate the introduction of <em>T. equi</em> genotype E from Europe with infected horses but not its installation, as well as a diagnostic issue to detect this genotype using PCR targeting <em>ema-1</em> gene.</div></div>","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"16 6","pages":"Article 102547"},"PeriodicalIF":3.4,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Human granulocytic anaplasmosis (HGA) is a tick-borne disease emerging in North America, caused by the zoonotic variant Ap-ha (human active) of the bacterium Anaplasma phagocytophilum. This research aimed to understand the reservoir competency of small mammals for Ap-ha in the province of Québec, Canada. To achieve this aim, wild small mammals were sampled from June to August in 2022 and 2023 and tested for Ap and its variants (Ap-ha, Ap-v1) using qPCR targeting the msp2 and 16S genes. In total, 547 small mammals from nine different taxa were live captured across two years. Nearly half (48.2 %) of small mammals carried at least one Ixodes scapularis tick larva and 29.3 % carried at least one I. scapularis nymph. The odds of Ap infection were three times higher in eastern chipmunks (OR = 2.98, p < 0.05) and five times lower in red squirrels (OR = 0.21, p < 0.01) when compared to Peromyscus spp. mice. When infected, Peromyscus mice and eastern chipmunks transmitted the infection on average to 6.8 % (CI95: 24.9–48.7) and 52.9 % (CI95: 16.7–89.1) of feeding larvae, respectively. An Ap variant could be identified in 90 % (109/121) of infected small mammals, all of which were the Ap-ha strain. In conclusion, eastern chipmunks and Peromyscus mice should be considered as reservoir hosts contributing to the transmission and emergence of anaplasmosis in Canada. This study also confirms the circulation of the Ap-ha variant within host and tick communities in Southeastern Canada.
{"title":"Various small mammal hosts are involved in the transmission cycle of zoonotic Anaplasma phagocytophilum in Southeastern Canada","authors":"Raphaëlle Audet-Legault , Cécile Aenishaenslin , Geneviève Baron , Heather Coatsworth , Marion Desmarchelier , Vanessa Gabriele-Rivet , Patrick A․ Leighton , Jérôme Pelletier , Jean-Philippe Rocheleau , Catherine Bouchard","doi":"10.1016/j.ttbdis.2025.102551","DOIUrl":"10.1016/j.ttbdis.2025.102551","url":null,"abstract":"<div><div>Human granulocytic anaplasmosis (HGA) is a tick-borne disease emerging in North America, caused by the zoonotic variant Ap-ha (human active) of the bacterium <em>Anaplasma phagocytophilum.</em> This research aimed to understand the reservoir competency of small mammals for Ap-ha in the province of Québec, Canada. To achieve this aim, wild small mammals were sampled from June to August in 2022 and 2023 and tested for Ap and its variants (Ap-ha, Ap-v1) using qPCR targeting the <em>msp2</em> and 16S genes. In total, 547 small mammals from nine different taxa were live captured across two years<em>.</em> Nearly half (48.2 %) of small mammals carried at least one <em>Ixodes scapularis</em> tick larva and 29.3 % carried at least one <em>I. scapularis</em> nymph. The odds of Ap infection were three times higher in eastern chipmunks (OR = 2.98, <em>p</em> < 0.05) and five times lower in red squirrels (OR = 0.21, <em>p</em> < 0.01) when compared to <em>Peromyscus</em> spp. mice. When infected, <em>Peromyscus</em> mice and eastern chipmunks transmitted the infection on average to 6.8 % (CI95: 24.9–48.7) and 52.9 % (CI95: 16.7–89.1) of feeding larvae, respectively. An Ap variant could be identified in 90 % (109/121) of infected small mammals, all of which were the Ap-ha strain. In conclusion, eastern chipmunks and <em>Peromyscus</em> mice should be considered as reservoir hosts contributing to the transmission and emergence of anaplasmosis in Canada. This study also confirms the circulation of the Ap-ha variant within host and tick communities in Southeastern Canada.</div></div>","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"16 6","pages":"Article 102551"},"PeriodicalIF":3.4,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-01Epub Date: 2025-10-18DOI: 10.1016/j.ttbdis.2025.102558
Abrar Hussain , Csaba Varga , Brian F. Allan , Nohra Mateus-Pinilla , Rebecca L. Smith
{"title":"Corrigendum to “Spatial distribution and clustering of medically important tick species in Illinois: Implications for tick-borne disease risk” [Ticks and Tick-borne Diseases 16 (2025) 102533]","authors":"Abrar Hussain , Csaba Varga , Brian F. Allan , Nohra Mateus-Pinilla , Rebecca L. Smith","doi":"10.1016/j.ttbdis.2025.102558","DOIUrl":"10.1016/j.ttbdis.2025.102558","url":null,"abstract":"","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"16 6","pages":"Article 102558"},"PeriodicalIF":3.4,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145330651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-01Epub Date: 2025-09-24DOI: 10.1016/j.ttbdis.2025.102552
Naledi P. Sekgobela , Ilse Vorster , Milana Troskie , Melvyn Quan , David E. Zimmerman , Ayesha Hassim , Luis Neves , Raksha V. Bhoora
Black (Diceros bicornis) and white (Ceratotherium simum) rhinoceroses in Southern Africa face multiple threats, including poaching, habitat loss, and translocation stress. Infections with Theileria bicornis (in both rhino species) and Babesia bicornis (confirmed only in black rhinos) add further health risks, with stressors such as translocation potentially increasing susceptibility. Effective management requires sensitive molecular diagnostic assays for accurate detection and surveillance. To address this, we developed a multiplex qPCR assay (MqTbBb) using species-specific TaqMan™ minor groove binder (MGB) probes for the simultaneous detection of T. bicornis and B. bicornis. The assay targets 18S rRNA gene regions, amplifying an 87 bp fragment for T. bicornis and a 51 bp fragment for B. bicornis, with efficiencies of 100 % and 98 %, respectively. Probit analysis determined a 95 % Limit of detection of 1.00 × 10⁻⁶ % and 6.27 × 10⁻⁶ % equivalent parasitized erythrocytes for T. bicornis and B. bicornis, respectively. No cross-reactivity was observed with other related protozoa tested. A total of 223 field samples from rhinos (101 black and 122 white) in Mpumalanga province were screened using both the MqTbBb and Reverse Line Blot (RLB) hybridization assays. The MqTbBb detected T. bicornis in 57 % of black and 99 % of white rhinos, with co-infections in 40 % of black rhinos. RLB detected T. bicornis in 96 % of black and 95 % of white rhinos, with a Babesia catch-all probe signal in 75 % and 32 %, respectively. B. bicornis was not detected by RLB and was never detected as a single infection by qPCR. These findings highlight high T. bicornis prevalence and rare B. bicornis infections (co-infections). The MqTbBb assay strengthens detection, surveillance, and conservation efforts.
{"title":"Advancing disease surveillance in rhinoceroses: A multiplex real-time PCR assay for detecting Theileria bicornis and Babesia bicornis","authors":"Naledi P. Sekgobela , Ilse Vorster , Milana Troskie , Melvyn Quan , David E. Zimmerman , Ayesha Hassim , Luis Neves , Raksha V. Bhoora","doi":"10.1016/j.ttbdis.2025.102552","DOIUrl":"10.1016/j.ttbdis.2025.102552","url":null,"abstract":"<div><div>Black (<em>Diceros bicornis</em>) and white (<em>Ceratotherium simum</em>) rhinoceroses in Southern Africa face multiple threats, including poaching, habitat loss, and translocation stress. Infections with <em>Theileria bicornis</em> (in both rhino species) and <em>Babesia bicornis</em> (confirmed only in black rhinos) add further health risks, with stressors such as translocation potentially increasing susceptibility. Effective management requires sensitive molecular diagnostic assays for accurate detection and surveillance. To address this, we developed a multiplex qPCR assay (MqTbBb) using species-specific TaqMan™ minor groove binder (MGB) probes for the simultaneous detection of <em>T. bicornis</em> and <em>B. bicornis</em>. The assay targets 18S rRNA gene regions, amplifying an 87 bp fragment for <em>T. bicornis</em> and a 51 bp fragment for <em>B. bicornis</em>, with efficiencies of 100 % and 98 %, respectively. Probit analysis determined a 95 % Limit of detection of 1.00 × 10⁻⁶ % and 6.27 × 10⁻⁶ % equivalent parasitized erythrocytes for <em>T. bicornis</em> and <em>B. bicornis</em>, respectively. No cross-reactivity was observed with other related protozoa tested. A total of 223 field samples from rhinos (101 black and 122 white) in Mpumalanga province were screened using both the MqTbBb and Reverse Line Blot (RLB) hybridization assays. The MqTbBb detected <em>T. bicornis</em> in 57 % of black and 99 % of white rhinos, with co-infections in 40 % of black rhinos. RLB detected <em>T. bicornis</em> in 96 % of black and 95 % of white rhinos, with a <em>Babesia</em> catch-all probe signal in 75 % and 32 %, respectively. <em>B. bicornis</em> was not detected by RLB and was never detected as a single infection by qPCR. These findings highlight high <em>T. bicornis</em> prevalence and rare <em>B. bicornis</em> infections (co-infections). The MqTbBb assay strengthens detection, surveillance, and conservation efforts.</div></div>","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"16 6","pages":"Article 102552"},"PeriodicalIF":3.4,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145120410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-01Epub Date: 2025-12-04DOI: 10.1016/j.ttbdis.2025.102574
Hinpetch Daungsupawong , Viroj Wiwanitkit
{"title":"Effective control of severe fever with thrombocytopenia syndrome in Daishan County: Correspondence","authors":"Hinpetch Daungsupawong , Viroj Wiwanitkit","doi":"10.1016/j.ttbdis.2025.102574","DOIUrl":"10.1016/j.ttbdis.2025.102574","url":null,"abstract":"","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"16 6","pages":"Article 102574"},"PeriodicalIF":3.4,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145688257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The lone star tick (LST), Amblyomma americanum, is an aggressive human biter and important vector of the causative agents of tick-borne diseases. As geographic ranges of multiple Amblyomma species rapidly expand due to habitat changes and human and other animal movement patterns, there are concerns for establishment of LST in US states with suitable climates, such as California, especially given a dearth in gaps in tick surveillance. Importantly, previous niche modeling confirmed habitat in California along the length of the coast and coast range mountains. We sought data on LSTs and LST risk from 30 different entities including companies that identify and test ticks, natural history and entomology museums and collections, experts, and large databases. These queries and published records yielded records of 76 LSTs from California as well as two Amblyomma cajennense sensu lato, one Amblyomma sabanerae, one Amblyomma maculatum, and five Amblyomma dissimile. Among LSTs, there were 18 adult females, ten males, 13 adults for which sex was not recorded, 22 nymphs, two larvae, and 11 with no stage data. LSTs were recorded only during late spring through late summer, with all three feeding stages superimposed temporally. Active surveillance was conducted at nine sites considered high-risk due to earlier records of LSTs or high probability of establishment on niche modeling, using tick flagging, monitoring ovine and cervid hosts, and circulating a flier; no LSTs were recovered in this activity. We assessed risk for establishment of LSTs in California using invasion theory, prior niche modeling, literature review of ecological constraints on LSTs within their current range, data acquired in retrospective and prospective segments of this study, and expert consultation. Elevated risk is expected particularly along coastal California. Although some of these ticks likely were transported from out of state endemic regions, the findings of 76 LSTs, including all three feeding stages, in multiple counties raises concern that establishment in the future could occur in California.
孤星蜱（Amblyomma americanum）是一种具有攻击性的人类叮咬者，是蜱传疾病病原体的重要媒介。由于栖息地的变化以及人类和其他动物的运动模式，多种蜱虫物种的地理范围迅速扩大，人们担心在美国气候适宜的州（如加利福尼亚州）建立LST，特别是考虑到蜱虫监测方面的不足。重要的是，之前的生态位模型证实了加州沿海岸和海岸山脉的栖息地。我们从30个不同的实体中寻找LST和LST风险的数据，包括鉴定和测试蜱虫的公司、自然历史和昆虫学博物馆和收藏、专家和大型数据库。这些查询和已发表的记录产生了76个来自加利福尼亚的lst记录，以及2个camjenense sensu lato Amblyomma sabanerae， 1个maculatum Amblyomma maculatum和5个disdism Amblyomma。其中雌成虫18只，雄成虫10只，未记录性别的成虫13只，若虫22只，幼虫2只，无龄期记录11只。lst仅在春末至夏末记录，所有三个摄食阶段在时间上重叠。在9个被认为高风险的地点进行了主动监测，因为早期有lst记录或建立生态位模型的可能性很大，使用蜱虫标记，监测羊和宫颈宿主，并散发传单；本次活动未回收lst。我们利用入侵理论、先前的生态位模型、对当前范围内lst的生态约束的文献综述、本研究的回顾性和前瞻性部分获得的数据以及专家咨询来评估在加州建立lst的风险。预计加州沿海地区的风险会增加。尽管其中一些蜱虫可能是从州外的流行地区运来的，但在多个县对76个lst（包括所有三个喂养阶段）的调查结果引起了人们的担忧，即未来可能会在加州建立。
{"title":"Assessing the potential risk of lone star tick, Amblyomma americanum, establishment in California","authors":"Janet Foley, Francesca Rubino, Drew Kam, Kailyn Lozano","doi":"10.1016/j.ttbdis.2025.102566","DOIUrl":"10.1016/j.ttbdis.2025.102566","url":null,"abstract":"<div><div>The lone star tick (LST), <em>Amblyomma americanum,</em> is an aggressive human biter and important vector of the causative agents of tick-borne diseases. As geographic ranges of multiple <em>Amblyomma</em> species rapidly expand due to habitat changes and human and other animal movement patterns, there are concerns for establishment of LST in US states with suitable climates, such as California, especially given a dearth in gaps in tick surveillance. Importantly, previous niche modeling confirmed habitat in California along the length of the coast and coast range mountains. We sought data on LSTs and LST risk from 30 different entities including companies that identify and test ticks, natural history and entomology museums and collections, experts, and large databases. These queries and published records yielded records of 76 LSTs from California as well as two <em>Amblyomma cajennense</em> sensu lato<em>,</em> one <em>Amblyomma sabanerae,</em> one <em>Amblyomma maculatum,</em> and five <em>Amblyomma dissimile.</em> Among LSTs, there were 18 adult females, ten males, 13 adults for which sex was not recorded, 22 nymphs, two larvae, and 11 with no stage data. LSTs were recorded only during late spring through late summer, with all three feeding stages superimposed temporally. Active surveillance was conducted at nine sites considered high-risk due to earlier records of LSTs or high probability of establishment on niche modeling, using tick flagging, monitoring ovine and cervid hosts, and circulating a flier; no LSTs were recovered in this activity. We assessed risk for establishment of LSTs in California using invasion theory, prior niche modeling, literature review of ecological constraints on LSTs within their current range, data acquired in retrospective and prospective segments of this study, and expert consultation. Elevated risk is expected particularly along coastal California. Although some of these ticks likely were transported from out of state endemic regions, the findings of 76 LSTs, including all three feeding stages, in multiple counties raises concern that establishment in the future could occur in California.</div></div>","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"16 6","pages":"Article 102566"},"PeriodicalIF":3.4,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145507936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-01Epub Date: 2025-11-20DOI: 10.1016/j.ttbdis.2025.102570
Sony Yean , Didot Budi Prasetyo , Theary Ren , Davy Krib , Saoya Sen , Bunthon Chea , Sothyra Tum , Sorn San , Samuth Sum , Sarah Bonnet , Sébastien Boyer
The tick fauna in Cambodia is poorly documented, with limited information on the diversity and distribution of tick species. This study aimed to address this knowledge gap by investigating tick species collected from various hosts, and across different habitats and regions of the country. Tick sampling was conducted in urban areas, rural villages, farms, and forest fringes, with additional samples obtained from a wildlife rescue center, caves, and swiftlet nests. Ticks were collected directly from hosts, as well as on vegetation through flagging methods. Tick species were identified morphologically, and selected specimens were subjected to molecular identification using the cox1 gene. A total of 853 vertebrate hosts representing 13 different animals, including five wildlife, were inspected: buffalo, cats, cattle, chickens, dogs, ducks, goats, goose, pigs, pigeons, pangolins, pythons, and wild pigs. From this first nationwide tick collection, a total of 7,461 ticks were collected, comprising six genera and 14 species of ticks, including seven newly identified species such as Carios batuensis, Dermacentor steini, Dermacentor filippovae, Haemaphysalis canestrinii, Haemaphysalis formosensis, Haemaphysalis hystricis, and Haemaphysalis wellingtoni. Rhipicephalus microplus and Rhipicephalus linnaei were the most predominant tick species collected from cattle and dogs, respectively, whereas no ticks were found on buffaloes, chickens, ducks, goose, pigs or pigeons. Results showed that ticks are widely distributed throughout Cambodia, with particularly rich diversity observed in forest fringes habitats. This study also allowed the number of tick species identified in the country with seven additional species, bringing the total to 26.
{"title":"Checklist and diversity of tick fauna associated with domestic animals in Cambodia","authors":"Sony Yean , Didot Budi Prasetyo , Theary Ren , Davy Krib , Saoya Sen , Bunthon Chea , Sothyra Tum , Sorn San , Samuth Sum , Sarah Bonnet , Sébastien Boyer","doi":"10.1016/j.ttbdis.2025.102570","DOIUrl":"10.1016/j.ttbdis.2025.102570","url":null,"abstract":"<div><div>The tick fauna in Cambodia is poorly documented, with limited information on the diversity and distribution of tick species. This study aimed to address this knowledge gap by investigating tick species collected from various hosts, and across different habitats and regions of the country. Tick sampling was conducted in urban areas, rural villages, farms, and forest fringes, with additional samples obtained from a wildlife rescue center, caves, and swiftlet nests. Ticks were collected directly from hosts, as well as on vegetation through flagging methods. Tick species were identified morphologically, and selected specimens were subjected to molecular identification using the <em>cox1</em> gene. A total of 853 vertebrate hosts representing 13 different animals, including five wildlife, were inspected: buffalo, cats, cattle, chickens, dogs, ducks, goats, goose, pigs, pigeons, pangolins, pythons, and wild pigs. From this first nationwide tick collection, a total of 7,461 ticks were collected, comprising six genera and 14 species of ticks, including seven newly identified species such as <em>Carios batuensis, Dermacentor steini, Dermacentor filippovae, Haemaphysalis canestrinii, Haemaphysalis formosensis, Haemaphysalis hystricis</em>, and <em>Haemaphysalis wellingtoni. Rhipicephalus microplus</em> and <em>Rhipicephalus linnaei</em> were the most predominant tick species collected from cattle and dogs, respectively, whereas no ticks were found on buffaloes, chickens, ducks, goose, pigs or pigeons. Results showed that ticks are widely distributed throughout Cambodia, with particularly rich diversity observed in forest fringes habitats. This study also allowed the number of tick species identified in the country with seven additional species, bringing the total to 26.</div></div>","PeriodicalId":49320,"journal":{"name":"Ticks and Tick-borne Diseases","volume":"16 6","pages":"Article 102570"},"PeriodicalIF":3.4,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145574808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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