Ixodes ricinus and Borrelia prevalence at the Arctic Circle in Norway

作者：Hvidsten Dag^*; Stuen Snorre; Jenkins Andrew; Dienus Olaf; Olsen Renate S; Kristiansen Bjorn Erik; Mehl Reidar; Matussek Andreas

来源：Ticks and Tick-Borne Diseases, 2014, 5(2): 107-112.

DOI：10.1016/j.ttbdis.2013.09.003

• Ixodes ricinus
• Distribution limit
• Borrelia burgdorferi
• Dog
• Cat
• Northwestern Europe

The distribution limit of lxodes ricinus ticks in northwestern Europe (Bronnoy, Norway, 1' south of the Arctic Circle), has been known since the 1930s. To reconfirm this finding and extend studies in the areas adjacent to the Arctic Circle (66 degrees 33' N), ticks were collected from dogs and cats in 8 districts in northern Norway from 64 degrees 56' N to 68 degrees 48' N. We detected 5491. ricinus, 244(44%) of them in Bronnoy district, and 305 (range 6-87 ticks) in 7 districts in the northern part of the study area. The prevalence of Borrelia in these ticks was determined by real-time PCR. In the Bronnoy district (65 degrees 28' N, 12 degrees 12' E), 29% of the I. ricinus were Borrelia spp.-positive, and the species B. afzelii was nearly twice as prevalent as B. garinii and/or B. valaisiana. In the study area north of Bronnoy district, only 12(4%) of the collected ticks contained Borrelia spp. In conclusion, tick occurrence and Borrelia prevalence are high in the Bronnoy district. In contrast, I. ricinus occurrence and Borrelia prevalence are low further north across the Arctic Circle in Norway.

• 出版日期2014
• 单位河北医科大学