Distribution of Theileria orientalis in Virginia Market Cattle, 2018–2020

• DOI: 10.3390/pathogens11111353
• Publication Date: 2022-11-16T07:24:53Z
• Authors: Alex Telionis; Kevin Lahmers; Michelle Todd; Amanda Carbonello; Charles C. Broaddus; Carolynn J. Bissett; Laura L. Hungerford
• Keywords: 0301 basic medicine; 2. Zero hunger; spatial distribution; prevalence; R; Chitose genotype; Article; 3. Good health; 03 medical and health sciences; <i>Theileria orientalis</i>; Ikeda genotype; Chitose genotype; prevalence; spatial distribution; Medicine; Ikeda genotype; <i>Theileria orientalis</i>

Theileria orientalis, genotype Ikeda, was recently detected in North America. Determining the emerging distribution of this pathogen is critical for understanding spread and developing management strategies. Whole blood samples were collected from cattle at Virginia livestock markets September 2018 through December 2020. Animals tested T. orientalis using a universal then specific real-time PCR based on MPSP gene. Prevalence each analyzed temporal trends mapped by county. Spatial patterns compared between genotypes assessed associations with habitat features, movements county proximity. Overall, 212 1980 positive an overall prevalence 8.7% (172/1980) 1.8% (36/1980) Chitose, 0.2% (3/1980) Buffeli. The Ikeda increased over time northern southwestern markets. Chitose occurred different regions, little overlap, but genotype, spatial associated combination environmental factors. Genotype qPCR testing surveillance across wide area are providing information temporal, spatial, other disease.