Blood contains the greatest proportion of infectious bloodborne virus particle concentration of all body fluids, and as such is the most significant transmission vehicle for occupational exposure in the health-care setting.

Saliva may also cause infection. During dental procedures, saliva may become contaminated with blood. If blood is not visible, it is still likely that very small quantities of blood are present, but the risk for transmitting HBV, HCV, or HIV is extremely small. Despite this small transmission risk, the CDC recommends that a qualified health care professional evaluate any occupational exposure to saliva in dental settings, regardless of visible blood.

The CDC notes that when evaluating occupational exposures to fluids that might contain HBV, HCV, or HIV, dental office workers should consider that all blood, body fluids, secretions, and excretions (except sweat) may contain transmissible infectious agents.

Risk of Hepatitis B Virus (HBV) Infection

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