“…16 Factors affecting bloodborne pathogen transmission include the amount of infected fluid, source infectivity, recipient susceptibility, and the site, duration, and dose of exposure. 17 Potential exposures of staff in residential developmental centers have been reported to occur primarily from residents' bites, fingernail scratches, and body fluids, and injury occurring occasionally from sharp instruments. Residents' bites also pose a potential risk of infection to the resident from the staff person who is bitten.…”