Borrelia burgdorferi sensu stricto ospC alleles associated with human Lyme borreliosis worldwide were detected in non-human biting tick Ixodes affinis and rodent hosts in southeastern U.S.A
OPEN Applied and environmental microbiology | 25 Dec 2012
N Rudenko, M Golovchenko, V Hönig, N Mallátová, L Krbková, P Mikulásek, N Fedorova, NM Belfiore, L Grubhoffer, RS Lane and JH Oliver
Comparative analysis of ospC genes from 127 Borrelia burgdorferi sensu stricto strains collected in Lyme disease endemic and non-endemic European and North American regions revealed close relatedness of geographically distinct populations. OspC alleles A, B and L were detected on both continents in vectors and hosts including humans. Six ospC alleles, A, B, L, Q, R and V, were prevalent in Europe; 4 of them were detected in samples of human origin. Ten ospC alleles, A, B, D, E3, F, G, H, H3, I3 and M, were identified in the far-western U.S.A. Four ospC alleles, B, G, H and L, were abundant in the southeastern U.S.A. Here we present the first expanded analysis of ospC alleles of B. burgdorferi strains from the southeastern U.S.A with respect to their relatedness to strains from other North American and European localities. We demonstrate that ospC genotypes commonly associated with human Lyme disease in endemic European and North American regions were detected in B. burgdorferi strains isolated from non-human biting tick Ixodes affinis and rodent hosts in southeastern U.S.A. We discovered that some ospC alleles previously known only from Europe are widely distributed in the southeastern U.S.A., a finding that confirms the hypothesis of trans-oceanic migration of Borrelia species.
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