| oral rabies vaccination of a northern ohio raccoon population: relevance of population density and prebait serology. | ohio's oral rabies vaccination (orv) program was established to prevent the westward spread of the raccoon (procyon lotor) rabies virus (lyssavirus, rhabdoviridae) in ohio, usa. the program, which targets raccoons, distributes vaccine-bait units (vbu) at a target density of 75 units/km2. few studies have examined the relationship of vbu density and target population density to the prevalence of rabies virus-neutralizing antibodies (rvna). we conducted experimental vbu distributions in august 200 ... | 2008 | 18689640 |