Francisco J Márquez, José E Granados, Luz M Canet, Manuel de Rojas, Antonio J Caruz, Jesús M Pérez
{"title":"The microbiome of the sucking louse Linognathus stenopsis (Phthiraptera, Anoplura, Linognathiidae).","authors":"Francisco J Márquez, José E Granados, Luz M Canet, Manuel de Rojas, Antonio J Caruz, Jesús M Pérez","doi":"10.1093/jme/tjaf060","DOIUrl":"10.1093/jme/tjaf060","url":null,"abstract":"","PeriodicalId":94091,"journal":{"name":"Journal of medical entomology","volume":" ","pages":"930-937"},"PeriodicalIF":0.0,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12271732/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144510147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yijin Chen, Yuting Zheng, Tianyun Su, Wenbo Hu, Ying Liang, Xiaobo Liu, Xiujun Li, Qiyong Liu
{"title":"Evaluation on activity and efficacy of Bacillus thuringiensis var. israelensis and S-methoprene against the Asian tiger mosquito, Aedes albopictus (Diptera: Culicidae), in discarded tires.","authors":"Yijin Chen, Yuting Zheng, Tianyun Su, Wenbo Hu, Ying Liang, Xiaobo Liu, Xiujun Li, Qiyong Liu","doi":"10.1093/jme/tjaf057","DOIUrl":"10.1093/jme/tjaf057","url":null,"abstract":"<p><p>The Asian tiger mosquito, Aedes albopictus Skuse (Diptera: Culicidae), is an important vector of various arboviruses. Effective control of mosquito vectors is essential to prevent the transmission of mosquito-borne diseases; however, sustainable larval control against this species has been notoriously difficult. To enhance effective larval control against Ae. albopictus, a laboratory initial test was conducted to determine the activity of microbial larvicide Bacillus thuringiensis var. israelensis (Bti) and a juvenile hormone analog S-methoprene. The technical grade and formulated product performed similarly in either Bti or S-methoprene. Compared with larvae from a laboratory strain, field-collected mosquitoes showed similar susceptibility to Bti, but significantly lower susceptibility to S-methoprene at IE30 and IE50. In semifield studies to evaluate efficacy of the formulations, as short as a 2-d efficacy was observed for Bti alone at 0.50 ppm, while longer efficacy of up to 3 and 4 wk was achieved by the S-methoprene treatments alone at 1 and 5 ppb, respectively, due to different modes of action and formulation technologies. The combination of Bti at 0.25 ppm and S-methoprene at 2.5 ppb exhibited an extended effect for up to 4 wk as in S-methoprene alone at 5 ppb. The efficacy of both insecticides was impacted by sunlight and dilution. Larvae from field collections were less susceptible to S-methoprene than those of laboratory colony in the semifield evaluation in discarded tires. The practicality of Bti and S-methoprene products for controlling Ae. albopictus in discarded tires was discussed in relation to the findings in current studies.</p>","PeriodicalId":94091,"journal":{"name":"Journal of medical entomology","volume":" ","pages":"895-904"},"PeriodicalIF":0.0,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144029852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lídia Gual-Gonzalez, Titilayomi Abiodun, Melissa S Nolan
{"title":"Defining the tick-borne disease occupational risk among 4 high-risk vocations in South Carolina.","authors":"Lídia Gual-Gonzalez, Titilayomi Abiodun, Melissa S Nolan","doi":"10.1093/jme/tjaf020","DOIUrl":"10.1093/jme/tjaf020","url":null,"abstract":"<p><p>Tick-borne diseases account for 75% of all vector-borne disease cases in the United States of America. The increase in incidence has been linked with increased exposure among outdoor workers, thus becoming occupational hazards. This brief study aimed to identify the potential occupational exposures among 4 vocational groups in South Carolina (SC) using a knowledge, attitudes, and practices questionnaire survey. A total of 176 individuals responded to the survey, across SC State Parks, SC Department of Natural Resources, SC Forestry Commission, and SC animal shelter and veterinary office employees. Veterinary-related employees had the lowest exposure risk, while forestry employees were the group with highest risk. The findings yielded discrepancies in perceived risk and preventive measures adopted; identifying a potential opportunity to develop an education and training program tailored to outdoor worker populations to maintain low tick bite exposures.</p>","PeriodicalId":94091,"journal":{"name":"Journal of medical entomology","volume":" ","pages":"712-717"},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143470113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Catherine D Santanello, Ellen M Santos, Hailey C Mueller, Isabelle R Hargraves, Amanda P Rogers, Brittany F Peterson
{"title":"Trypanosoma cruzi (Kinetoplastida: Trypanosomatidae) in the Midwest: prevalence among vectors and medical provider awareness.","authors":"Catherine D Santanello, Ellen M Santos, Hailey C Mueller, Isabelle R Hargraves, Amanda P Rogers, Brittany F Peterson","doi":"10.1093/jme/tjaf018","DOIUrl":"https://doi.org/10.1093/jme/tjaf018","url":null,"abstract":"<p><p>True bugs of the subfamily Triatominae may carry the protozoan Trypanosoma cruzi, the causative agent of Chagas disease. Endemic to South and Central America, the protozoan has been found in triatomines throughout the southern United States of America, yet it is unclear how far north Trypanosoma cruzi occurs in Triatoma species. The objective of this research was to determine if triatomines in the St. Louis metropolitan area carry this protozoan and to assess professionals across the One Health spectrum for knowledge of the vectors and Chagas disease. Triatomine bugs were collected using a variety of methods, and then processed using PCR and gel electrophoresis to determine if they were positive for Trypanosoma cruzi. In addition, a phone call survey measured knowledge of Chagas disease. Eleven Triatoma sanguisuga and one Triatoma lecticularia specimens were collected between July 2022 and October 2023. One triatomine collected was too desiccated to determine the species. Of the thirteen total specimens, 6 (46%) were positive for T. cruzi. The phone call survey yielded a response rate of 81% among 97 attempted calls. The professionals interviewed included 23 veterinarians, 19 pharmacists, 14 vector control specialists, 11 public health officials, 9 physicians, and 3 wildlife biologists. Of the 79 participants, 64% were unfamiliar with Chagas disease. This preliminary study showed that T. cruzi is prevalent among triatomines in the Midwest and that education across the One Health professional spectrum may increase knowledge among professionals.</p>","PeriodicalId":94091,"journal":{"name":"Journal of medical entomology","volume":"62 3","pages":"667-674"},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144046577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Taxonomy and molecular phylogeny of a new species of black fly (Diptera: Simuliidae) in the Simulium striatum species-group from central Thailand.","authors":"Wichai Srisuka, Kittipat Aupalee, Hiroyuki Takaoka, Yasushi Otsuka, Atiporn Saeung","doi":"10.1093/jme/tjaf016","DOIUrl":"10.1093/jme/tjaf016","url":null,"abstract":"<p><p>Generally, the DNA barcode relying on a short fragment of the cytochrome c oxidase I (COI) gene is a powerful tool for facilitating species discovery and taxonomic resolution in Diptera, including black flies. However, the COI barcode lacks sufficient resolution to identify several species or infer phylogenetic relationships of black flies in the Simulium striatum species-group, whereas the fast-evolving nuclear big zinc finger (BZF) gene has been suggested as a key marker for identifying the species. In this study, a new species of black fly in the S. striatum species-group from Kamphaeng Phet province, central Thailand, was discovered and characterized through an integrated method combining morphological analysis and molecular data based on the BZF gene. The new species, Simulium (Simulium) concitatum sp. nov., was morphologically described for all life stages, excluding the egg. It shares many morphological similarities with other species of the S. striatum species-group, particularly S. thilorsuense Takaoka, Srisuka & Saeung, 2022 described from Tak province, western Thailand. Sequence analysis and phylogeny inferred from the BZF gene further confirmed that S. concitatum sp. nov. is a distinct species of the S. striatum species-group and revealed its close genetic relationship to S. wangkwaiense Takaoka, Srisuka & Saeung, 2020. The morphological differences between the new species and all known species of the S. striatum species-group documented in Thailand and other countries are provided to assist in species identification. Furthermore, this study underscores the BZF gene as an effective genetic marker to differentiate the species.</p>","PeriodicalId":94091,"journal":{"name":"Journal of medical entomology","volume":" ","pages":"506-524"},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143560421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Peter Schiff, Alexandra N Cumbie, Ashley Roberts, Jennifer Riley, Gillian Eastwood
{"title":"Eastern cottontails (Sylvilagus floridanus) as hosts for ticks infected with Borrelia burgdorferi, Anaplasma phagocytophilum, and Powassan virus in Virginia, USA.","authors":"Peter Schiff, Alexandra N Cumbie, Ashley Roberts, Jennifer Riley, Gillian Eastwood","doi":"10.1093/jme/tjaf009","DOIUrl":"10.1093/jme/tjaf009","url":null,"abstract":"<p><p>Tick-borne pathogen infections are an increasing occurrence globally, yet many aspects of pathogen maintenance and host-tick interactions remain poorly understood. Here we consider the potential role of eastern cottontails (Sylvilagus floridanus) in the enzootic cycles of tick-borne pathogens of medical importance in Virginia. Over a 3-year period, ticks and blood were collected from rabbits acquired through passive surveillance in 21 counties in Virginia. Seven hundred seventy ticks were collected from 90 of the 121 rabbits examined in this study. Tick species collected from the rabbits included Haemaphysalis leporispalustris, Haemaphysalis longicornis, Amblyomma americanum, Dermacentor variabilis, and Ixodes spp. Ticks identified as Ixodes spp. and H. leporispalustris were tested in pools for Borrelia burgdorferi, Borrelia miyamotoi, Anaplasma phagocytophilum, and Powassan virus (POWV). Borrelia burgdorferi and A. phagocytophilum were detected in several Ixodes spp. pools yielding a pooled infection rate of 4.6% and 3.7%, respectively. These bacterial pathogens along with POWV were detected in pools of H. leporispalustris yielding pooled infection rates of 0.2%, 0.2%, and 0.5%, respectively. In addition, 3 rabbits were found to have neutralizing antibodies against POWV indicating exposure to this tick-borne flavivirus. We describe the presence of infected ticks (including juvenile ticks that could bite humans as adults) utilizing rabbits as hosts, as well as evidence of POWV infection (1.75% seroprevalence) in rabbit sera. These results provide useful information about the role of rabbits as hosts to infected ticks, though cannot ascertain their role in the maintenance or the transfer of pathogens from the rabbits to naïve ticks. Future studies are warranted to explore any additional roles these and other lagomorphs may be playing in the enzootic cycle of tick-borne pathogens.</p>","PeriodicalId":94091,"journal":{"name":"Journal of medical entomology","volume":" ","pages":"610-620"},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143412108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sulagna Chakraborty, Lee Ann Lyons, Fikriyah Winata, Nohra Mateus-Pinilla, Rebecca L Smith
{"title":"Methods of active surveillance for hard ticks and associated tick-borne pathogens of public health importance in the contiguous United States: a comprehensive systematic review.","authors":"Sulagna Chakraborty, Lee Ann Lyons, Fikriyah Winata, Nohra Mateus-Pinilla, Rebecca L Smith","doi":"10.1093/jme/tjaf031","DOIUrl":"10.1093/jme/tjaf031","url":null,"abstract":"<p><p>Tick-borne diseases in humans and animals have increased prevalence across the United States. To understand risk factors underlying tick-borne diseases it is useful to conduct regular surveillance and monitoring of ticks and the pathogens they carry, in a sustained and effective manner. Using the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines, this study aims to summarize the previously used methods for active surveillance of ticks and tick-borne pathogens, identify the existing knowledge gaps in ongoing surveillance, and highlight and guide the mechanisms required to inform those gaps for more effective and sustainable future surveillance efforts. After screening 2,500 unique studies between 1944 and 2018, we found 646 articles that performed active surveillance of hard ticks and/or their associated tick-borne pathogens of public health importance within the United States. An additional 103 articles were included for the 2019 to 2023 period. Active surveillance has been performed in ~42% of the counties (1944 to 2018) and ~23% of the counties (2019 to 2023) within the contiguous US, and states with the most coverage are in the Northeast, Upper Midwest, and along the West coast. The most reported tick was Ixodes scapularis (195 studies) and most commonly reported pathogen was Borrelia burgdorferi (143 studies). Overall, surveillance efforts have increased and become more diversified, and methods of tick and tick-borne pathogens testing have undergone changes, but those efforts are mainly concentrated in focal regions of a county. Future surveillance efforts should follow Centers for Disease Control and Prevention guidelines and target areas of United States with scarce reports of active surveillance and build collaborations and resources to increase surveillance.</p>","PeriodicalId":94091,"journal":{"name":"Journal of medical entomology","volume":" ","pages":"675-689"},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143665736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bethany L McGregor, Chip F Markwardt, Travis M Davis
{"title":"Investigating ungulate site use as a driver of Culicoides (Diptera: Ceratopogonidae) emergence from larval habitats.","authors":"Bethany L McGregor, Chip F Markwardt, Travis M Davis","doi":"10.1093/jme/tjaf005","DOIUrl":"10.1093/jme/tjaf005","url":null,"abstract":"<p><p>Culicoides (Diptera: Ceratopogonidae) Latreille biting midges are the vectors of several viruses of veterinary significance. The larvae of some biting midge species develop in semiaquatic habitats that are affected by the activity of vertebrates. However, the importance of vertebrate animal activity in biting midge density has not been satisfactorily quantified. The goal of this study was to investigate the impact that three different hooved animals representing agricultural (cattle), wild (cervids), and intermediate (bison) animal populations have on the density and emergence of Culicoides from larval habitats. Trail cameras recorded vertebrate activity at eight sites at the Konza Prairie Biological Station with cattle, cervids, and/or bison, which was paired with larval substrate sampling to investigate midge density. The total time spent by all 3 target animals over the previous month and the average time spent by bison were significantly positively correlated with overall biting midge emergence. Species-specific analyses revealed significant positive associations of C. crepuscularis Malloch with several cattle variables including number of cattle days and events and average number of cattle, while more bison variables were found to be significant for C. haematopotus Malloch (bison days and bison events, negative associations) and C. variipennis Coquillett (negative associations for bison days and average number of bison; positive relationship with average bison time). Significant results for cervids included negative associations of C. crepuscularis with average cervid time and C. variipennis with cervid days. These results show that different ungulates impact midge abundance and emergence in different ways, improving our understanding of midge population drivers.</p>","PeriodicalId":94091,"journal":{"name":"Journal of medical entomology","volume":" ","pages":"641-647"},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143416577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Catherine Bouchard, Ariane Dumas, Elizabeth Dyer, Carol-Ann Desrochers-Plourde, Raphaëlle Audet-Legault, Marine Hubert, Cécile Aenishaenslin, Jean-Philippe Rocheleau, Patrick Leighton, Anaïs Gasse, Mahmood Iranpour, Joel Smid, Brooks Waitt, Jade Savage, Heather Coatsworth
{"title":"First report of the deer ked, Lipoptena cervi, and associated pathogens in southern Québec, Canada.","authors":"Catherine Bouchard, Ariane Dumas, Elizabeth Dyer, Carol-Ann Desrochers-Plourde, Raphaëlle Audet-Legault, Marine Hubert, Cécile Aenishaenslin, Jean-Philippe Rocheleau, Patrick Leighton, Anaïs Gasse, Mahmood Iranpour, Joel Smid, Brooks Waitt, Jade Savage, Heather Coatsworth","doi":"10.1093/jme/tjaf017","DOIUrl":"10.1093/jme/tjaf017","url":null,"abstract":"<p><p>Deer keds (Lipoptena cervi), an introduced European species, are expanding their geographic range in North America. We document their first recorded presence in Québec, Canada, map their distribution, and highlight the detection of pathogens of potential public health relevance. In the Estrie region of southern Québec, 47 deer keds (L. cervi) were collected from 14 (5.5%) of 254 harvested white-tailed deer (Odocoileus virginianus). Borrelia spp. and Anaplasma phagocytophilum were detected in the body of 1/44 and 8/44 L. cervi specimens, respectively. A statistically significant spatial cluster of white-tailed deer infested by L. cervi was found in southern Estrie using the Bernoulli-based spatial scan statistic.</p>","PeriodicalId":94091,"journal":{"name":"Journal of medical entomology","volume":" ","pages":"718-723"},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143470211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Phurchhoki Sherpa, Jasleen Kaur, Maria V Murgia, Clifford Sadof, Linda Pfeiffer, Catherine A Hill
{"title":"Evaluating knowledge of ticks and tick-borne diseases among Indiana healthcare professionals.","authors":"Phurchhoki Sherpa, Jasleen Kaur, Maria V Murgia, Clifford Sadof, Linda Pfeiffer, Catherine A Hill","doi":"10.1093/jme/tjaf003","DOIUrl":"10.1093/jme/tjaf003","url":null,"abstract":"<p><p>Ticks and tick-borne disease (TBD) risks are increasing in Indiana and North America. The successful prevention, diagnosis, and treatment of TBDs requires healthcare professionals be well-informed and prepared. This study reports the findings of a 2020 online survey of 465 Indiana healthcare professionals, designed to assess their knowledge of ticks and TBDs and identify factors influencing total knowledge scores. The survey included 24 discrete/ordinal questions and one open-ended question. Statistical analyses, including ANOVA, t-tests, and the Boruta algorithm, were conducted in R. Indiana healthcare professionals scored 30.8% for tick- and 57.9% for disease-related questions. Professionals scored higher on most disease-related questions, including (i) the importance of prompt tick removal to reduce TBD transmission risk, (ii) that not all Lyme disease cases present with bull's-eye rash, and (iii) the signs and symptoms of TBDs. They scored lower on tick-related questions, including (i) the tick species capable of transmitting diseases to humans, (ii) TBDs considered endemic, (iii) the distribution of Ixodes scapularis (deer tick), and (iv) regions considered higher risk for Lyme disease transmission in Indiana. Knowledge scores varied across demographic categories, with the use of online resources identified as the most important predictor of total knowledge scores. These findings highlight the importance of increasing awareness of existing resources, expanding online educational materials to cover TBDs beyond Lyme disease, and promoting self-guided learning. Achieving these goals will require collaboration among state and public health agencies, healthcare professionals, research institutions, and community outreach partners.</p>","PeriodicalId":94091,"journal":{"name":"Journal of medical entomology","volume":" ","pages":"648-658"},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143470201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}