Equine Piroplasmosis Associated with Amblyomma cajennense Ticks, Texas, USA
- Glen A. Scoles
- H. Joel Hutcheson
- Jack L. Schlater
- Steven G. Hennager
- Angela M. Pelzel
- Don P. Knowles
Publication date
October 2011
DOI Publisher
Centers for Disease Control and Prevention (CDC) Journal
Emerging Infectious DiseasesAbstract
We report an outbreak of equine piroplasmosis in southern Texas, USA, in 2009. Infection prevalence reached 100% in some areas (292 infected horses). Amblyomma cajennense was the predominant tick and experimentally transmitted Theileria equi to an uninfected horse. We suggest that transmission by this tick species played a role in this outbreak
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