General Information: This strain was recovered from an acutely infected cow from Northern Idaho, USA and bears an msp1a genotype of JBB. This strain is transmitted by ticks and is known to be virulent. This organism is the causative agent of bovine anaplasmosis and is an obligate intracellular pathogen. Transmission occurs via an arthropod vector (tick) and is a major problem in tropical regions where it causes severe morbidity in cattle populations. The bacterium lives intracellularly within membrane-bound vesicles in the host erythrocyte, a cell type which it specifically targets, resulting in severe anemia for the host organism.