Entomologic and Serologic Evidence of Zoonotic Transmission of Babesia microti, Eastern Switzerland
Foppa, Ivo M.
Krause, Peter J.
Telford, Sam R.
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CitationFoppa, Ivo M., Peter J. Krause, Andrew Spielman, Heidi Goethert, Lise Gern, Brigit Brand, and Sam R. Telford. 2002. Entomologic and serologic evidence of zoonotic transmission of babesia microti, eastern switzerland. Emerging Infectious Diseases 8(7): 722-726.
AbstractWe evaluated human risk for infection with Babesia microti at a site in eastern Switzerland where several B. microti–infected nymphal Ixodes ricinus ticks had been found. DNA from pooled nymphal ticks amplified by polymerase chain reaction was highly homologous to published B. microti sequences. More ticks carried babesial infection in the lower portion of the rectangular 0.7-ha grid than in the upper (11% vs. 0.8%). In addition, we measured seroprevalence of immunoglobulin (Ig) G antibodies against B. microti antigen in nearby residents. Serum from 1.5% of the 396 human residents of the region reacted to B. microti antigen (\(\geq1:64)\), as determined by indirect immunofluorescence assay (IgG). These observations constitute the first report demonstrating B. microti in a human-biting vector, associated with evidence of human exposure to this agent in a European site.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:10436229
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