Hepatitis B Transmission Through Kissing
Typical kissing is not a route of hepatitis B virus (HBV) transmission. [1]
HBV may be present in saliva, but transmission through kissing or sharing utensils is considered unlikely. [1]
Evidence From Public Health Guidance
CDC states that hepatitis B is not spread through kissing. [1]
CDC’s Pink Book notes that transmission through saliva through kissing is unlikely. [2]
CDC’s occupational health guidance notes that studies have documented HBV in saliva, but saliva has generally not represented an occupational risk unless it contains blood. [3]
Practical Risk Considerations
HBV transmission risk from oral exposure increases in the presence of blood in oral secretions. [3]
Human bites are a recognized transmission concern for HBV and represent percutaneous inoculation rather than routine kissing. [2]
Prevention Measures
Hepatitis B vaccination is the primary prevention strategy against infection after potential exposure. [4]
Postexposure prophylaxis may include hepatitis B vaccine plus hepatitis B immune globulin for eligible exposures. [4]