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ILADS Members' Papers & Presentations

April, 2014
Advances In Pleomorphic Forms of Borrelia
Leona Gilbert, PhD
Lyme Disease is the most frequently reported tick-borne infection in North America and Europe and is endemic in many other areas in the world. Various in vitro studies confirm that B. burgdorferi sensu lato is pleomorphic in morphology. The bacteria can be seen in the parent spirochete form, cell wall deficient forms such as the cyst or L forms, round bodies, and spheroplasts, or blebs, and loops as well as biofilm colonies. Download →
Written text by Leena Meriläinen, and Leona Gilbert from Department of Biological and Environmental Sciences and NanoScience Center, University of Jyväskylä, Jyväskylä, Finland
January, 2014
The Establishment of a Blacklegged Tick Population by Migratory Songbirds in Ontario, Canada
John D. Scott,
Research Division,
Lyme Disease Association of Ontario,
This 2-year study implicates migratory songbirds in the initiation of an inland Lyme disease endemic area in southeastern Ontario. The spirochetal bacterium, Borrelia burgdorferi sensu lato Johnson, Schmid, Hyde, Steigerwalt & Brenner, which causes Lyme disease, was detected in blacklegged ticks, Ixodes scapularis Say, collected by flagging. Based on PCR amplification, 19 (33.3%) of 57 I. scapularis adults(males, females) were infected with B. burgdorferi. Since transovarial transmission of B. burgdorferi is nil in I. scapularis and white-tailed deer. Odocoileus virginianus Zimmermann, are not reservoir-competent hosts, we suggest that songbirds are the mode of introduction of B.burgdorferi-infectedI. scapularis. All of the natural abiotic and biotic attributes are present to establish a Lyme disease endemic area. Blacklegged ticks survived the winter successfully at the epicentre. We provide substantial evidence that migratory songbirds initially introduced Lyme disease vector ticks and B. burgdorferi spirochetes to this remote woodland habitat and initiated an established population of blacklegged ticks. Download →