Occurrence of<i>Amblyomma americanum</i>(Acari: Ixodidae) and Human Infection With<i>Ehrlichia chaffeensis</i>in Wisconsin, 2008–2015

Christenson, Megan; Lee, Xia; Larson, Scott R.; Johnson, Diep Hoang; Jensen, J. M.; Meller, Megan; Paskewitz, Susan M.

doi:10.1093/jme/tjw218

Cited by 7 publications

(5 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Updated distribution maps for this species that included SWAT results were reported in Eisen et al [15] and we found no additions for the additional 2016–2017 collections included herein. Similarly, A. americanum records have been recently summarized [17] and no additions were identified. D. variabilis was widely distributed as it was submitted by 32 of the 35 participating counties (no specimens from La Crosse, Vernon, or Marathon Counties) with reports for eight additional nonparticipant counties.…”

Section: Resultsmentioning

confidence: 99%

“…These studies demonstrated that I. scapularis has undergone a dramatic range expansion in Wisconsin since the 1980s [15]. Another vector species, Amblyomma americanum Linnaeus, formerly unknown in Wisconsin, has also been detected with increasing frequency [16,17]. Our current understanding of the presence and geographical range of other ixodid tick species in Wisconsin comes from studies that summarize the results of collections from animals or humans that largely occurred between the early 1900s and the 1970s ([3,6,18,19,20,21,22,23,24,25,26,27,28,29] and references therein).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Passive Animal Surveillance to Identify Ticks in Wisconsin, 2011–2017

Lee

Murphy

Johnson

et al. 2019

Insects

Self Cite

View full text Add to dashboard Cite

The introduction of new tick species poses a risk to human and animal health. Systematic active surveillance programs are expensive and uncommon. We evaluated a passive animal surveillance program as a monitoring tool to document the geographic distribution and host associations of ticks in Wisconsin. Passive surveillance partners included veterinary medical clinics, domestic animal shelters, and wildlife rehabilitation centers from 35 of the 72 Wisconsin counties. A total of 10,136 tick specimens were collected from 2325 animals from July 2011 to November 2017 and included Dermacentor variabilis Say (29.7% of all ticks), Ixodes texanus Banks (25.5%), Ixodes scapularis Say (19.5%), Haemaphysalis leporispalustris Packard (13.8%), Ixodes cookei Packard (4.4%), and Dermacentor albipictus Packard (1.7%). Less common species (<1% of collection) included Ixodes dentatus Marx, Ixodes sculptus Neumann, Ixodes marxi Banks, Amblyomma americanum Linnaeus, and Rhipicephalus sanguineus Latreille. Of the 2325 animals that were examined, most were domestic dogs (53%), eastern cottontail rabbits (16%), domestic cats (15%), and North American raccoons (11%). An additional 21 mammal and 11 bird species were examined at least once during the six years of the study. New county records are summarized for each species. Public health, academic, and veterinary and animal care partners formed a community of practice enabling effective statewide tick surveillance.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Passive Animal Surveillance to Identify Ticks in Wisconsin, 2011–2017

Lee

Murphy

Johnson

et al. 2019

Insects

Self Cite

View full text Add to dashboard Cite

show abstract

“…In addition to I. scapularis, Amblyomma americanum (the lone star tick) populations are emerging in the state. This tick is responsible for the transmission of Ehrlichia chaffeensis [18].…”

Section: Introductionmentioning

confidence: 99%

Tickborne disease awareness and protective practices among U.S. Forest Service employees from the upper Midwest, USA

Schotthoefer

Stinebaugh

Martin³

et al. 2020

BMC Public Health

View full text Add to dashboard Cite

Background People with occupations that require them to spend time working outdoors in suitable tick habitats are predicted to be at an increased risk for tick-borne diseases (TBDs). However, few studies have assessed the risks of outdoor employees in the United States. Methods We conducted a cross-sectional survey to collect data on exposure to ticks and TBD infections among U.S. Forest Service employees in a high TBD incidence region of northern Wisconsin, and to examine employee knowledge, attitudes, and practices (KAPs) regarding TBDs to help guide future education and prevention programs. Chi-square contingency tables, calculations of odds ratios, and logistic regression models were used to identify associations among self-reported employee factors, the proportion of correctly answered knowledge questions, their ranked concern for TBDs, adherence to practicing preventive behaviors, and willingness to pay for protective measures. Results Ninety-five employees completed the survey. Nearly all respondents (97%) reported recent tick exposure, with 27% reporting encountering 10 or more ticks per week during peak tick season. Employee knowledge of TBD was high (median score: 80% correct). Fifty-nine percent of respondents had high concern for TBDs, and there was high adherence to conducting body checks for ticks (83% reported always doing them), but only moderate use of tick repellents (24% reported always and 60% reported occasionally using). High concern for TBD (adjusted odds ratio (aOR) = 6.32 [95% confidence intervals, 1.97–20.28]), a history of TBD diagnosis (aOR = 5.88 [1.41–24.55]), and older age (≥ 46 years) (aOR = 3.29 [1.00–10.84]) were positively associated with high practice adherence. Respondents suggested they would be willing to pay for personal protective methods and get a hypothetical vaccine for Lyme disease, but not community-wide efforts to control ticks. Conclusions Our study provides evidence that U.S. Forest Service employees in Wisconsin represent a high risk group for TBD, and despite relatively high TBD knowledge and engagement in tick protection activities, efforts are needed to reduce their risks for tick bites. More generally, our findings suggest that studies to better understand the factors related to the adoption and effectiveness of public health interventions are needed.

show abstract

“…americanum have been spreading northwards in Illinois (Gilliam et al 2020, Lyons et al 2021, Indiana (Wojan et al 2021), and Ohio (Fitak et al 2014). Although there have been increases in A. americanum detected by the public in Wisconsin (Christenson et al 2017) and southern Ontario (Nelder et al 2019), established populations have not yet been declared in those areas (at the time of manuscript submission).…”

Section: Introductionmentioning

confidence: 99%

“…Recently, breeding populations of A. americanum have been documented in southern New England (Stafford et al 2018, Telford et al 2019) and in states surrounding the Great Lakes, established populations of have been spreading northwards in Illinois (Gilliam et al 2020, Lyons et al 2021), Indiana (Wojan et al 2021), and Ohio (Fitak et al 2014). Although there have been increases in A. americanum detected by the public in Wisconsin (Christenson et al 2017) and southern Ontario (Nelder et al 2019), established populations have not yet been declared in those areas (at the time of manuscript submission). As of July 2019, the Minnesota Department of Public Health has not reported any established populations of A. americanum although they have been reported by residents since 1998 (https://www.health.state.mn.us/diseases/tickborne/longstarstickreportsmap.pdf, accessed 10/6/21), and established populations have been identified in nearby counties to the west in South Dakota (Black et al 2021) and to the south in Iowa (Springer et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Northward Expansion ofAmblyomma americanum(Acari: Ixodidae) into Southern Michigan

Fowler

Nguyentran

Quantroche³

et al. 2022

Preprint

View full text Add to dashboard Cite

Amblyomma americanum (Linnaeus) (Acari: Ixodidae) (lone star tick) is an aggressive, generalist parasite that vectors numerous important human and animal pathogens. In recent decades its geographic range has been expanding northwards from endemic regions in the southeastern and southcentral US. In 2019 five questing A. americanum comprising two life stages were detected at one site in Berrien County, in southwestern Michigan, satisfying one CDC criterium for an established population for the first time in the state. To better characterize the northern extent of emerging A. americanum, we conducted active surveillance (i.e., drag sampling) in summer 2020 throughout Michigans southern counties and detected one adult A. americanum from each of six widespread sites, including where they had been detected in 2019. A larger established population was identified at another site in Berrien County, which yielded 691 A. americanum comprising three life stages. Questing tick phenologies at this site were similar to that reported for other regions. Statewide surveillance in 2021 revealed no A. americanum outside of Berrien County, but establishment criteria were met again at the two sites where established populations were first detected respectively in 2019 and 2020. These observations may represent the initial successful invasion of A. americanum into Michigan. Data from passive (1999-2020) and active surveillance (2004-2021) efforts, including a domestic animal sentinel program (2015-2018), are reported to provide context for this nascent invasion. Continued active surveillance is needed to help inform the public, medical professionals, and public health officials of the health risks associated with this vector.

show abstract

Occurrence ofAmblyomma americanum(Acari: Ixodidae) and Human Infection WithEhrlichia chaffeensisin Wisconsin, 2008–2015

Cited by 7 publications

References 16 publications

Passive Animal Surveillance to Identify Ticks in Wisconsin, 2011–2017

Passive Animal Surveillance to Identify Ticks in Wisconsin, 2011–2017

Tickborne disease awareness and protective practices among U.S. Forest Service employees from the upper Midwest, USA

Northward Expansion ofAmblyomma americanum(Acari: Ixodidae) into Southern Michigan

Contact Info

Product

Resources

About