scholarly journals Assessing Recognition of the Vector of Lyme Disease Using Resin-Embedded Specimens in a Lyme Endemic Area

2020 ◽  
Author(s):  
Gebbiena M Bron ◽  
Hannah Fenelon ◽  
Susan M Paskewitz
Keyword(s):  
United States ◽  
Lyme Disease ◽  
Adult Female ◽  
Endemic Area ◽  
Ixodes Scapularis ◽  
The United States ◽  
Convenience Sample ◽  
Potential Benefits ◽  
Vector Borne ◽  
Tick Check

Abstract Lyme disease (LD) is the most common vector-borne disease in the United States. To assess whether a tick bite puts someone at risk for LD, adequate tick identification skills are needed. We surveyed residents of a high LD-incidence state, Wisconsin, on their ability to distinguish ticks from insects and to identify the specimens that could transmit the LD causative agent. Surveys were conducted using resin blocks with four insects and four tick specimens embedded. About half of the participants (64 of 130) recognized all of the ticks, and 60% of those individuals chose only ticks and no insects. Younger participants (18- to 44-yr old) were more likely to identify ticks correctly compared with those 45 yr and older. Participants who agreed strongly with the statement ‘I know a lot about ticks` were also likelier to correctly identify ticks. When asked to identify which specimens could transmit LD, less than 25% of participants chose both the Ixodes scapularis Say adult female and nymph and about half of those (15% of participants) picked only those two and no other specimens. Although the relatively small convenience sample was biased toward younger participants who consider themselves ‘outdoorsy’, results showed that further assessments of tick recognition skills are needed to understand what determines whether people can recognize medically important ticks and to evaluate the potential benefits of enhanced education. In addition to the value of the resin blocks as research tools, the blocks may be useful as training tools to improve tick check efficacy.

scholarly journals Practical Guide to Trapping Peromyscus leucopus (Rodentia: Cricetidae) and Peromyscus maniculatus for Vector and Vector-Borne Pathogen Surveillance and Ecology

2020 ◽  
Vol 20 (6) ◽  
Author(s):  
Erika T Machtinger ◽  
Scott C Williams
Keyword(s):  
United States ◽  
Lyme Disease ◽  
Small Mammals ◽  
Ixodes Scapularis ◽  
The United States ◽  
Eastern United States ◽  
Ixodes Pacificus ◽  
Tick Borne Disease ◽  
Vector Borne ◽  
Pathogen Surveillance

Abstract Arthropods pests are most frequently associated with both plants and vertebrate animals. Ticks, in particular the blacklegged ticks Ixodes scapularis Say and Ixodes pacificus Cooley & Kohls (Acari: Ixodidae), are associated with wildlife hosts and are the primary vectors of Lyme disease, the most frequently reported vector-borne disease in the United States. Immature blacklegged ticks in the eastern United States frequently use small mammals from the genus Peromyscus as hosts. These mice are competent reservoirs for Borrelia burgdorferi, the causative agent of Lyme disease, as well as other tick-borne pathogens. To conduct surveillance on immature ticks and pathogen circulation in hosts, capture and handling of these small mammals is required. While protocols for rearing and pest surveillance on plants are common, there are very few protocols aimed at entomologists to conduct research on vertebrate–arthropod relationships. The goal of this manuscript is to provide a practical template for trapping Peromyscus spp. for vector and vector-borne pathogen surveillance and ecology for professionals that may not have a background in wildlife research. Important considerations are highlighted when targeting P. leucopus Rafinesque and P. maniculatus Wagner. Specifically, for tick and tick-borne disease-related projects, materials that may be required are suggested and references and other resources for researchers beginning a trapping study are provided.

scholarly journals Human Coinfection withBorrelia burgdorferiandBabesia microtiin the United States

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Kristen L. Knapp ◽  
Nancy A. Rice
Keyword(s):  
United States ◽  
Lyme Disease ◽  
Causative Agent ◽  
Ixodes Scapularis ◽  
Immunological Response ◽  
The United States ◽  
Babesia Microti ◽  
Current State ◽  
Tick Borne Disease ◽  
Multiple Pathogens

Borrelia burgdorferi, the causative agent of Lyme disease, andBabesia microti, a causative agent of babesiosis, are increasingly implicated in the growing tick-borne disease burden in the northeastern United States. These pathogens are transmitted via the bite of an infected tick vector,Ixodes scapularis, which is capable of harboring and inoculating a host with multiple pathogens simultaneously. Clinical presentation of the diseases is heterogeneous and ranges from mild flu-like symptoms to near-fatal cardiac arrhythmias. While the reason for the variability is not known, the possibility exists that concomitant infection with bothB. burgdorferiandB. microtimay synergistically increase disease severity. In an effort to clarify the current state of understanding regarding coinfection withB. burgdorferiandB. microti, in this review, we discuss the geographical distribution and pathogenesis of Lyme disease and babesiosis in the United States, the immunological response of humans toB. burgdorferiorB. microtiinfection, the existing knowledge regarding coinfection disease pathology, and critical factors that have led to ambiguity in the literature regarding coinfection, in order to eliminate confusion in future experimental design and investigation.

scholarly journals Recent Progress in Lyme Disease and Remaining Challenges

2021 ◽  
Vol 8 ◽  
Author(s):  
Jason R. Bobe ◽  
Brandon L. Jutras ◽  
Elizabeth J. Horn ◽  
Monica E. Embers ◽  
Allison Bailey ◽  
...  
Keyword(s):  
United States ◽  
Lyme Disease ◽  
Molecular Mechanisms ◽  
The United States ◽  
Persistent Symptoms ◽  
Number Of Patients ◽  
Vector Borne ◽  
The Many ◽  
Long Term Impact ◽  
Patients Experience

Lyme disease (also known as Lyme borreliosis) is the most common vector-borne disease in the United States with an estimated 476,000 cases per year. While historically, the long-term impact of Lyme disease on patients has been controversial, mounting evidence supports the idea that a substantial number of patients experience persistent symptoms following treatment. The research community has largely lacked the necessary funding to properly advance the scientific and clinical understanding of the disease, or to develop and evaluate innovative approaches for prevention, diagnosis, and treatment. Given the many outstanding questions raised into the diagnosis, clinical presentation and treatment of Lyme disease, and the underlying molecular mechanisms that trigger persistent disease, there is an urgent need for more support. This review article summarizes progress over the past 5 years in our understanding of Lyme and tick-borne diseases in the United States and highlights remaining challenges.

scholarly journals Passage through Ixodes scapularis Ticks Enhances the Virulence of a Weakly Pathogenic Isolate of Borrelia burgdorferi

2009 ◽  
Vol 78 (1) ◽  
pp. 138-144 ◽  
Author(s):  
Sarojini Adusumilli ◽  
Carmen J. Booth ◽  
Juan Anguita ◽  
Erol Fikrig
Keyword(s):  
United States ◽  
Lyme Disease ◽  
Borrelia Burgdorferi ◽  
Ixodes Scapularis ◽  
The United States ◽  
Sensu Stricto ◽  
Array Analysis ◽  
C3h Mice ◽  
Attenuated Isolate

ABSTRACT Lyme disease is the most common tick-borne illness in the United States. In this paper we explore the contribution of Ixodes scapularis ticks to the pathogenicity of Borrelia burgdorferi in mice. Previously we demonstrated that an isolate of B. burgdorferi sensu stricto (designated N40), passaged 75 times in vitro (N40-75), was infectious but was no longer able to cause arthritis and carditis in C3H mice. We now show that N40-75 spirochetes can readily colonize I. scapularis and multiply during tick engorgement. Remarkably, tick-transmitted N40-75 spirochetes cause disease in mice. N40-75 spirochetes isolated from these animals also retained their pathogenicity when subsequently administered to mice via syringe inoculation. Array analysis revealed that several genes associated with virulence, including bba25, bba65, bba66, bbj09, and bbk32, had higher expression levels in the tick-passaged N40-75 spirochete. These data suggest that transmission of a high-passage attenuated isolate of B. burgdorferi by the arthropod vector results in the generation of spirochetes that have enhanced pathogenesis in mice.

scholarly journals Lyme Disease Presenting with Multiple Cranial Nerve Deficits: Report of a Case

2016 ◽  
Vol 2016 ◽  
pp. 1-3 ◽  
Author(s):  
Abhishek Chaturvedi ◽  
Keith Baker ◽  
Donald Jeanmonod ◽  
Rebecca Jeanmonod
Keyword(s):  
United States ◽  
Lyme Disease ◽  
Borrelia Burgdorferi ◽  
Inflammatory Disease ◽  
Cranial Nerve ◽  
Cranial Nerves ◽  
The United States ◽  
Vector Borne Disease ◽  
Vector Borne ◽  
Multiple Cranial Nerve

Lyme disease is a tick-transmitted multisystem inflammatory disease caused by the spirocheteBorrelia burgdorferi. With more than 25,000 CDC reported cases annually, it has become the most common vector-borne disease in the United States. We report a case of 38-year-old man with Lyme disease presenting with simultaneous palsy of 3rd, 5th, 7th, 9th, and 10th cranial nerves.

Modeling the Sensitivity of Blacklegged Ticks (Ixodes scapularis) to Temperature and Land Cover in the Northeastern United States

2020 ◽  
Author(s):  
Jonathan M Winter ◽  
Trevor F Partridge ◽  
Dorothy Wallace ◽  
Jonathan W Chipman ◽  
Matthew P Ayres ◽  
...  
Keyword(s):  
United States ◽  
Lyme Disease ◽  
Land Cover ◽  
New Hampshire ◽  
Ixodes Scapularis ◽  
Compartment Model ◽  
The United States ◽  
Growth Stages ◽  
Eastern United States ◽  
Northeastern United States

Abstract The prevalence of Lyme disease and other tick-borne diseases is dramatically increasing across the United States. While the rapid rise in Lyme disease is clear, the causes of it are not. Modeling Ixodes scapularis Say (Acari: Ixodidae), the primary Lyme disease vector in the eastern United States, presents an opportunity to disentangle the drivers of increasing Lyme disease, including climate, land cover, and host populations. We improved upon a recently developed compartment model of ordinary differential equations that simulates I. scapularis growth, abundance, and infection with Borrelia burgdorferi (Spirochaetales: Spirochaetaceae) by adding land cover effects on host populations, refining the representation of growth stages, and evaluating output against observed data. We then applied this model to analyze the sensitivity of simulated I. scapularis dynamics across temperature and land cover in the northeastern United States. Specifically, we ran an ensemble of 232 simulations with temperature from Hanover, New Hampshire and Storrs, Connecticut, and land cover from Hanover and Cardigan in New Hampshire, and Windsor and Danielson in Connecticut. Consistent with observations, simulations of I. scapularis abundance are sensitive to temperature, with the warmer Storrs climate significantly increasing the number of questing I. scapularis at all growth stages. While there is some variation in modeled populations of I. scapularis infected with B. burgdorferi among land cover distributions, our analysis of I. scapularis response to land cover is limited by a lack of observations describing host populations, the proportion of hosts competent to serve as B. burgdorferi reservoirs, and I. scapularis abundance.

Do-It-Yourself Tick Control: Granular Gamma-Cyhalothrin Reduces Ixodes scapularis (Acari: Ixodidae) Nymphs in Residential Backyards

2020 ◽  
Author(s):  
Gebbiena M Bron ◽  
Xia Lee ◽  
Susan M Paskewitz
Keyword(s):  
United States ◽  
Lyme Disease ◽  
Ixodes Scapularis ◽  
Low Cost ◽  
The United States ◽  
Tick Control ◽  
Eastern United States ◽  
Individual Level ◽  
Nymphal Tick ◽  
Do It Yourself

Abstract Lyme disease is the most common vector-borne disease in the United States with hotspots in the Northeast and Midwest. Integrated vector control for mosquito-borne disease prevention is often organized at the community level, but tick control is primarily coordinated at the household and individual level. Management of the blacklegged tick, Ixodes scapularis (Say), the vector of the causative agent of Lyme disease in the Midwest and eastern United States in peridomestic environments may be critical as many tick encounters are reported to occur in the yard. Therefore, we assessed the effectiveness of a widely available and low-cost pesticide that targets common lawn pests and is labeled for use against ticks. In June 2019, we evaluated a granular form of gamma-cyhalothrin in a placebo-controlled residential backyard study (n = 90) in two communities in Wisconsin. The product applied by the research team reduced nymphal blacklegged ticks in plots established in the lawn part of the ecotone by 97% one week after application at both communities and by 89–97% three to four weeks postapplication. The proportion of homes with at least one nymphal tick postapplication was significantly lower at acaricide-treated homes and ranged from 4.2 to 29.2% compared with placebo homes where at least one nymphal tick was found at 50–81.5% of homes. These results support the efficacy of a low-cost do-it-yourself strategy for homeowners seeking to reduce blacklegged ticks in the yard.

scholarly journals Context matters: Contrasting behavioral and residential risk factors for Lyme disease between two high-incidence regions in the Northeastern and Midwestern U.S

2020 ◽  
Author(s):  
Gebbiena M. Bron ◽  
Maria del P. Fernandez ◽  
Scott R. Larson ◽  
Adam Maus ◽  
Dave Gustafson ◽  
...  
Keyword(s):  
United States ◽  
Risk Factors ◽  
Lyme Disease ◽  
Human Behavior ◽  
The United States ◽  
Protective Measure ◽  
Protective Measures ◽  
Outdoor Activities ◽  
High Incidence ◽  
Vector Borne

AbstractThe dynamics of zoonotic vector-borne diseases are determined by a complex set of parameters including human behavior that may vary with socio-ecological contexts. Lyme disease is the most common vector-borne disease in the United States and the Northeast and upper Midwest are the regions most affected - two areas with differing levels of urbanization and sociocultural settings. The probability of being diagnosed with Lyme disease is related to the risk of encounters with an infected blacklegged tick, which reflects both the environmental tick hazard and human behaviors. Herein, we compare behavioral and peridomestic risk factors associated with human-tick encounters between high-incidence states in the Northeast (New York and New Jersey) and Midwest (Wisconsin) of the United States. We used a smartphone application, The Tick App, as a novel survey tool, during spring and summer of 2018. Adaptive human behavior was identified in the relationship between outdoor activities and the use of preventive methods. More frequent recreational outdoor activities and gardening (a peridomestic activity) were associated with an increased likelihood of using personal protective measures. Weekly participation in non-seasonal recreational and peridomestic outdoor activities in spring and summer was associated with an increased likelihood of finding a tick in the fall or winter. Most outdoor activities were more frequently reported by participants from the Midwest than the Northeast. Participants in the Northeast reported less use of personal protective measures, but they reported more interventions to reduce the presence of peridomestic deer and ticks (i.e. pesticide applications on their property) than participants in the Midwest. Participants from the Midwest were more likely to kill rodents on their property. Context mattered, and our study illustrates the need for the assessment of personal behavior and tick exposure in these two Lyme disease-endemic regions to aid in targeted public health messaging to reduce tick-borne diseases.Highlights-Use of personal tick prevention was associated with more frequent outdoor activity-Personal protective measure use was higher in the Midwest than Northeast-Interventions reducing peridomestic deer and ticks more common in the Northeast

scholarly journals Evidence for Geographic Variation in Life-Cycle Processes Affecting Phenology of the Lyme Disease Vector Ixodes scapularis (Acari: Ixodidae) in the United States

2018 ◽  
Vol 55 (6) ◽  
pp. 1386-1401 ◽  
Author(s):  
Nicholas H Ogden ◽  
Genevieve Pang ◽  
Howard S Ginsberg ◽  
Graham J Hickling ◽  
Russell L Burke ◽  
...  
Keyword(s):  
United States ◽  
Life Cycle ◽  
Lyme Disease ◽  
Geographic Variation ◽  
Ixodes Scapularis ◽  
The United States ◽  
Disease Vector
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