A multi-year assessment of blacklegged tick (Ixodes scapularis) population establishment and Lyme disease risk areas in Ottawa, Canada, 2017-2019.
A multi-year assessment of blacklegged tick (Ixodes scapularis) population establishment and Lyme disease risk areas in Ottawa, Canada, 2017-2019.
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对加拿大渥太华的Blacklegged Tick（Ixodes capularis）种群建立和莱姆病风险区域的多年评估，加拿大，2017 - 2019年。
DOI：
10.1371/journal.pone.0246484
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发表时间：
2021
期刊：
影响因子：
3.7
通讯作者：
Kulkarni MA
中科院分区：
文献类型：
--
作者：
Burrows H;Talbot B;McKay R;Slatculescu A;Logan J;Thickstun C;Lindsay LR;Dibernardo A;Koffi JK;Ogden NH;Kulkarni MA
由于蜱虫媒介肩胛硬蜱向北扩张，加拿大人面临着莱姆病的新威胁。我们通过对 28 个地点的主动监测，评估了 2017 年至 2019 年加拿大安大略省渥太华市肩胛孢菌种群的建立程度和伯氏疏螺旋体的发生情况。我们使用了 Clow 等人开发的现场指示器工具。使用药物采样结果确定每个地点每个蜱群的肩胛叶蜱定植的风险。根据现场指示器工具获得的结果，我们为每个地点分配了一个生态分类，描述了两个连续队列的蜱定植模式（队列1由2017年秋季和2018年春季收集的蜱组成，队列2由2018年秋季和2019年春季收集的蜱组成）。每年特定地点肩胛 I. scapularis 的总密度范围为每人每小时 0 至 16.3 只蜱。密度最高的地点位于绿带区内、渥太华市西部的郊区/农村地区以及渥太华河沿岸；最低密度出现在郊区/城市核心地区。伯氏疏螺旋体感染率表现出类似的空间分布模式。在可获得两个蜱群体数据的 23 个地点中，11 个地点被分类为“高稳定”，4 个被分类为“新兴”，2 个被分类为“低稳定”，6 个被分类为“非零”。在所有高稳定地点和一个新兴地点都发现了感染伯氏疏螺旋体的蜱。这些发现表明，高度稳定的地点对社区构成莱姆病暴露的风险，因为它们的繁殖蜱种群具有一致的伯氏疏螺旋体感染水平。持续监测肩胛蜱、伯氏疏螺旋体以及其他蜱种和新出现的蜱传病原体的范围扩大对于确定在持续的气候变化和城市扩张的情况下人类接触蜱传病原体的高风险区域非常重要。
Canadians face an emerging threat of Lyme disease due to the northward expansion of the tick vector, Ixodes scapularis. We evaluated the degree of I. scapularis population establishment and Borrelia burgdorferi occurrence in the city of Ottawa, Ontario, Canada from 2017–2019 using active surveillance at 28 sites. We used a field indicator tool developed by Clow et al. to determine the risk of I. scapularis establishment for each tick cohort at each site using the results of drag sampling. Based on results obtained with the field indicator tool, we assigned each site an ecological classification describing the pattern of tick colonization over two successive cohorts (cohort 1 was comprised of ticks collected in fall 2017 and spring 2018, and cohort 2 was collected in fall 2018 and spring 2019). Total annual site-specific I. scapularis density ranged from 0 to 16.3 ticks per person-hour. Sites with the highest density were located within the Greenbelt zone, in the suburban/rural areas in the western portion of the city of Ottawa, and along the Ottawa River; the lowest densities occurred at sites in the suburban/urban core. B. burgdorferi infection rates exhibited a similar spatial distribution pattern. Of the 23 sites for which data for two tick cohorts were available, 11 sites were classified as “high-stable”, 4 were classified as “emerging”, 2 were classified as “low-stable”, and 6 were classified as “non-zero”. B. burgdorferi-infected ticks were found at all high-stable sites, and at one emerging site. These findings suggest that high-stable sites pose a risk of Lyme disease exposure to the community as they have reproducing tick populations with consistent levels of B. burgdorferi infection. Continued surveillance for I. scapularis, B. burgdorferi, and range expansion of other tick species and emerging tick-borne pathogens is important to identify areas posing a high risk for human exposure to tick-borne pathogens in the face of ongoing climate change and urban expansion.
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影响因子：
3.7
作者：
Clow, Katie M.;Leighton, Patrick A.;Jardine, Claire M.
通讯作者：
Jardine, Claire M.
DOI：
10.1073/pnas.0233733100
发表时间：
2003-01-21
影响因子：
11.1
作者：
LoGiudice, K;Ostfeld, RS;Keesing, F
通讯作者：
Keesing, F
影响因子：
1.3
作者：
Egizi, Andrea M.;Robbins, Richard G.;Fonseca, Dina M.
通讯作者：
Fonseca, Dina M.
影响因子：
2.1
作者：
KEIRANS, JE;LITWAK, TR
通讯作者：
LITWAK, TR
影响因子：
5.7
作者：
Ogden, Nicholas H.;Lindsay, L. Robbin;Leighton, Patrick A.
通讯作者：
Leighton, Patrick A.