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Trends Microbiol. 2002 Feb;10(2):74-9.

Host association of Borrelia burgdorferi sensu lato--the key role of host complement.

Author information

1
Dept of Infectious Disease Epidemiology, Imperial College of Science, Technology and Medicine, St Mary's Campus, Norfolk Place, W2 1PG., London, UK. k.kurtenbach@ic.ac.uk

Abstract

Borrelia burgdorferi sensu lato (s.l.), the tick-borne agent of Lyme borreliosis, is a bacterial species complex comprising 11 genospecies. Here, we discuss whether the delineation of genospecies is ecologically relevant. We provide evidence that B. burgdorferi s.l. is structured ecologically into distinct clusters that are host specific. An immunological model for niche adaptation is proposed that suggests the operation of complement-mediated selection in the midgut of the feeding tick. We conclude that vertebrate hosts rather than tick species are the key to Lyme borreliosis spirochaete diversity.

PMID:
11827808
[Indexed for MEDLINE]

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