{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,20]],"date-time":"2026-05-20T02:45:59Z","timestamp":1779245159947,"version":"3.51.4"},"reference-count":103,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2021,10,6]],"date-time":"2021-10-06T00:00:00Z","timestamp":1633478400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000038","name":"Natural Sciences and Engineering Research Council of Canada","doi-asserted-by":"publisher","award":["2015"],"award-info":[{"award-number":["2015"]}],"id":[{"id":"10.13039\/501100000038","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Canadian Lyme Disease Foundation","award":["2013"],"award-info":[{"award-number":["2013"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Pathogens"],"abstract":"<jats:p>Ticks are vectors of many diseases, including Lyme disease (Ld). Lyme disease is an emerging disease in Canada caused by infection with the Lyme borreliosis (Lb) members of the Borrelia genus of spirochaete bacteria, of which Borrelia\u00a0burgdorferi is regionally the most prevalent. The primary tick vector in central and eastern Canada, Ixodes scapularis, is increasing in numbers and in the geographical extent of established populations. This study documents the distribution of ticks recovered by passive surveillance, and their B.\u00a0burgdorferi infection prevalence, in three Canadian Maritime provinces from 2012\u20132020. These regions represent areas in which tick populations are widely established, establishing, and considered non-established. Using a community science approach by partnering with veterinarians and members of the public, we collected over 7000 ticks from the 3 provinces. The three species found most often on companion animals and humans were I. scapularis (76.9%), Ixodes cookei (10.4%) and Dermacentor variabilis (8.9%). The most common hosts were dogs (60.5%), cats (16.8%) and humans (17.6%). As is typical of passive surveillance tick collections, the majority of ticks recovered were adult females; for I. scapularis 90.2%, 5.3%, 3.9% and 0.6% of the total of 5630 ticks recovered for this species were adult females, adult males, nymphs and larvae, respectively. The majority of B. burgdorferi-infected ticks were I. scapularis, as expected. Borrelia infection prevalence in I scapularis was higher in Nova Scotia (20.9%), the province with the most endemic regions, than New Brunswick (14.1%) and Prince Edward Island (9.1%), provinces thought to have established and non-established tick populations, respectively. The province-wide Borrelia infection prevalence generally increased in these latter tow provinces over the course of the study. The host did not have a significant effect on B. burgdorferi infection prevalence; I. scapularis ticks from dogs, cats, humans was, 13.3% (n = 3622), 15.6% (n = 817), 17.9% (n = 730), respectively. No I. scapularis larvae were found infected (n = 33) but B. burgdorferi was detected in 14.8% of both adults (n = 5140) and nymphs (n = 215). The incidence of B. burgdorferi infection also did not differ by engorgement status 15.0% (n = 367), 15.1% (n = 3101) and 14.4% (n = 1958) of non-engorged, engorged and highly engorged ticks, respectively, were infected. In New Brunswick, at the advancing front of tick population establishment, the province-wide infection percentages generally increased over the nine-year study period and all health district regions showed increased tick recoveries and a trend of increased percentages of Borrelia-infected ticks over the course of the study. Within New Brunswick, tick recoveries but not Borrelia infection prevalence were significantly different from endemic and non-endemic regions, suggesting cryptic endemic regions existed prior to their designation as a risk area. Over the 9 years of the study, tick recoveries increased in New Brunswick, the primary study region, and I. scapularis recoveries spread northwards and along the coast, most but not all new sites of recoveries were predicted by climate-based models, indicating that ongoing tick surveillance is necessary to accurately detect all areas of risk. Comparison of tick recoveries and public health risk areas indicates a lag in identification of risk areas. Accurate and timely information on tick distribution and the incidence of Borrelia and other infections are essential for keeping the public informed of risk and to support disease prevention behaviors.<\/jats:p>","DOI":"10.3390\/pathogens10101284","type":"journal-article","created":{"date-parts":[[2021,10,8]],"date-time":"2021-10-08T21:26:20Z","timestamp":1633728380000},"page":"1284","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Monitoring Risk: Tick and Borrelia burgdorferi Public Participatory Surveillance in the Canadian Maritimes, 2012\u20132020"],"prefix":"10.3390","volume":"10","author":[{"given":"Julie","family":"Lewis","sequence":"first","affiliation":[{"name":"Department of Biology, Mount Allison University, Sackville, NB E4L 1G7, Canada"},{"name":"D\u00e9partement de Chimie et Biochimie, Universit\u00e9 de Moncton, Moncton, NB E1A 3E9, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrea M.","family":"Kirby","sequence":"additional","affiliation":[{"name":"Department of Biology, Mount Allison University, Sackville, NB E4L 1G7, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kami Dawn","family":"Harris","sequence":"additional","affiliation":[{"name":"Department of Biology, Mount Allison University, Sackville, NB E4L 1G7, Canada"},{"name":"Department of Pathology and Microbiology, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, PE C1A 4P3, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cory L.","family":"Filiaggi","sequence":"additional","affiliation":[{"name":"Department of Biology, Mount Allison University, Sackville, NB E4L 1G7, Canada"},{"name":"IWK Health Centre, Halifax, NS B3K 6R8, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alexandra","family":"Foley-Eby","sequence":"additional","affiliation":[{"name":"Department of Biology, Mount Allison University, Sackville, NB E4L 1G7, Canada"},{"name":"Department of Veterinary Microbiology, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Malcolm","family":"Mann","sequence":"additional","affiliation":[{"name":"Department of Biology, Mount Allison University, Sackville, NB E4L 1G7, Canada"},{"name":"Department of Geography and Environment, Mount Allison University, Sackville, NB E4L 1G7, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"Lieske","sequence":"additional","affiliation":[{"name":"Department of Geography and Environment, Mount Allison University, Sackville, NB E4L 1G7, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vett K.","family":"Lloyd","sequence":"additional","affiliation":[{"name":"Department of Biology, Mount Allison University, Sackville, NB E4L 1G7, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,10,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"319","DOI":"10.1093\/ilar\/ilx005","article-title":"Tick-borne zoonoses in the United States: Persistent and emerging threats to human health","volume":"58","author":"Eisen","year":"2017","journal-title":"ILAR J."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"242","DOI":"10.1016\/j.pt.2015.10.002","article-title":"Silomes and Mialomes: A system-biology view of tick tissues and tick-host interactions","volume":"32","author":"Karim","year":"2016","journal-title":"Trends Parasitol."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"245","DOI":"10.1146\/annurev.en.40.010195.001333","article-title":"Tick salivary gland physiology","volume":"40","author":"Sauer","year":"1995","journal-title":"Annu. 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