Vector-Borne Infections in Tornado-Displaced and Owner-Relinquished Dogs in Oklahoma, USA. 
To determine the prevalence of infection with vector-borne agents in a cross-section of dogs from Oklahoma, where canine vector-borne diseases are common, blood samples were evaluated through serology and molecular analysis.  Antibodies reactive to Ehrlichia spp.,  Rickettsia rickettsii, R. montanensis, and "R. amblyommii" were detected in 10.5% (11/105), 74.3% (78/105), 58.1% (61/105), and 55.2% (58/105) of dogs, respectively.  Presence of spotted fever group Rickettsia spp.  DNA was identified in 13.1% (8/61) of shelter dogs but not in any pet dogs (0/44).  DNA of "R. amblyommii" was confirmed by sequencing, constituting the first report of this agent in a naturally infected dog.  Antigen of Dirofilaria immitis was detected in 10.5% (11/105) and 16.2% (17/105) of samples before and after heat treatment, respectively.  In total, 87.6% (92/105) of the dogs had evidence of infection with at least one vector-borne disease agent, confirming high risk of exposure to multiple vector-borne disease agents, several of which are zoonotic.