Abstract:
:A novel species within the Borrelia burgdorferi sensu lato complex, Borrelia mayonii, was recently described and found to be associated with Lyme borreliosis in the Upper Midwest of the United States. The blacklegged tick, Ixodes scapularis, is naturally infected with B. mayonii in the Upper Midwest and has been experimentally demonstrated to serve as a vector for this spirochete. Natural vertebrate reservoirs for B. mayonii remain unknown. In this study, we demonstrate that an experimental spirochete host, the CD-1 strain outbred white mouse, can maintain active infection with B. mayonii for up to 1year: infected mice consistently yielded ear biopsies containing motile spirochetes from 29 to 375days after they were first infected via tick bite. Infection rates in resultant nymphal ticks varied greatly both over time for larvae fed on the same individual mouse at different time points after infection (2-42%) and for larvae fed on different mice at a given time point up to 8 months after infection (0-48%). Infection rates were lower in nymphs fed as larvae on mice 10-12 months after infection (2-3% for 5 mice and 9.8% for 1 mouse). In addition to ear biopsies, B. mayonii was detected from bladder, heart, and spinal cord of infected mice when they were sacrificed 163-375days after initial infection via tick bite. Examination of blood from mice determined to be infected with B. mayonii by ear biopsy did not produce evidence of B. mayonii DNA in blood taken 8-375days after the mice were first infected via tick bite.
journal_name
Ticks Tick Borne Disjournal_title
Ticks and tick-borne diseasesauthors
Dolan MC,Breuner NE,Hojgaard A,Hoxmeier JC,Pilgard MA,Replogle AJ,Eisen Ldoi
10.1016/j.ttbdis.2016.11.002subject
Has Abstractpub_date
2017-01-01 00:00:00pages
196-200issue
1eissn
1877-959Xissn
1877-9603pii
S1877-959X(16)30192-3journal_volume
8pub_type
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