Experimental Transmission of Ehrlichia equi to Horses through Naturally Infected Ticks (Ixodes pacificus) from Northern California

AUTOR(ES)

Reubel, Gerhard H.

FONTE

American Society for Microbiology

RESUMO

We report the experimental transmission of Ehrlichia equi from naturally infected Ixodes pacificus ticks to horses. Three weeks after exposure to ticks, two of three horses developed clinical signs compatible with E. equi infection, while one horse remained asymptomatic. 16S rRNA gene PCR of blood leukocyte lysates was positive for all horses at various time points; two horses seroconverted. The 16S rRNA gene sequences amplified from tick-exposed horses showed more than 99% homology to corresponding fragments of the 16S rRNA genes of E. equi, Ehrlichia phagocytophila, and the human granulocytic ehrlichiosis agent.

Documentos Relacionados

• An Ehrlichia strain from a llama (Lama glama) and Llama-associated ticks (Ixodes pacificus).
• Characterization of Borrelia burgdorferi strains isolated from Ixodes pacificus ticks in California.
• Molecular Evidence of Bartonella spp. in Questing Adult Ixodes pacificus Ticks in California
• Quantitative Evaluation of Ehrlichial Burden in Horses after Experimental Transmission of Human Granulocytic Ehrlichia Agent by Intravenous Inoculation with Infected Leukocytes and by Infected Ticks
• Purification and Characterization of Borrelia burgdorferi from Feeding Nymphal Ticks (Ixodes scapularis)