Sentinel surveillance of Lyme disease risk in Canada, 2019: Results from the first year of the Canadian Lyme Sentinel Network (CaLSeN)

作者：Camille Guillot, Jackie Badcock, Katie M. Clow, Jennifer Cram, Shaun J. Dergousoff, Antonia Dibernardo, Michelle D. Evason, Erin Fraser, Eleni Galanis, Salima Gasmi, Greg J. German, Douglas T Howse, Claire M. Jardine, Emily Jenkins, Jules K. Koffi, Manisha Ann Kulkarni, L. Robbin Lindsay, Genevieve Lumsden, Roman McKay, Muhammad Golam Morshed, Douglas Munn, Mark P. Nelder, Joe R. Nocera, Marion Ripoche, Kateryn Rochon, Curtis B. Russell, Andreea M. Slatculescu, Benoit Talbot, Karine Thivierge, Maarten Jeroen Voordouw, Catherine Bouchard, Patrick A. Leighton · 发表于：Canada Communicable Disease Report · 年份：2020 · DOI：10.14745/ccdr.v46i10a08 · 被引用次数：48 · 研究领域：Vector-borne infectious diseases、Zoonotic diseases and public health、Mosquito-borne diseases and control

Background: Lyme disease is an emerging vector-borne zoonotic disease of increasing public health importance in Canada.As part of its mandate, the Canadian Lyme Disease Research Network (CLyDRN) launched a pan-Canadian sentinel surveillance initiative, the Canadian Lyme Sentinel Network (CaLSeN), in 2019.Objectives: To create a standardized, national sentinel surveillance network providing a real-time portrait of the evolving environmental risk of Lyme disease in each province. Methods:A multicriteria decision analysis (MCDA) approach was used in the selection of sentinel regions.Within each sentinel region, a systematic drag sampling protocol was performed in selected sampling sites.Ticks collected during these active surveillance visits were identified to species, and Ixodes spp.ticks were tested for infection with Borrelia burgdorferi, Borrelia miyamotoi, Anaplasma phagocytophilum, Babesia microti and Powassan virus Results: In 2019, a total of 567 Ixodes spp.ticks (I.scapularis [n=550]; I. pacificus [n=10]; and I. angustus [n=7]) were collected in seven provinces: British Columbia, Manitoba, Ontario, Québec, New Brunswick, Nova Scotia and Prince Edward Island.The highest mean tick densities (nymphs/100 m 2 ) were found in sentinel regions of Lunenburg (0.45), Montréal (0.43) and Granby (0.38).Overall, the Borrelia burgdorferi prevalence in ticks was 25.2% (0%-45.0%).One I. angustus nymph from British Columbia was positive for Babesia microti, a first for the province.The ...