id, synovial fluid, pleural fluid, peritoneal fluid, pericardial fluid, and amniotic fluid. Saliva has been shown to contain HBV-deoxyribonucleic acid at concentrations of 1/1,000 to 1/10,000 that of infected persons' serum. However, despite the fact that universal precautions are not generally applied to saliva, special care is recommended for dentistry. Occupationally acquired HBV infection has been documented in dental workers. Moreover, two possible cases of occupationally acquired HIV infection involving dentists have been reported ("Update", 1988, pp. 377-382). It should also be noted that dental workers are at risk for the transmission of herpes simplex virus 1 (Gonzalez & Naleway, 1988, p. 467). Furthermore, in addition to infectious agents, health care personnel may also be subject to a variety of toxic substances. For example, laboratory studies have shown that various cancer drugs are toxic, mutagenic, teratogenic, and carcinogenic. Moreover, various reports have associated occupational exposure to these agents with nausea, headaches, dizziness
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