Vaccinations are available for some etiologic agents used in the laboratory. The Stanford University Occupation Health Center medical staff, in conjunction with the Administrative Panel on Biosafety and the Biosafety Officer, will make the recommendation for the use of vaccinations on a case-by-case basis. Risk assessment and vaccine recommendations are done based on agent, strain, work performed, transmission routes, potential hazards of procedures, health of the individual and other concerns. For example, work with live wild- type rabies virus or work with bats is likely to result in a recommendation to receive the rabies vaccine; work with the viral vector mutant rabies virus does not lead to a recommendation to receive the vaccine. As with Hepatitis B, when a vaccine recommendation is made, researchers or employees are required to fill out and sign a vaccine declaration form but are not required to receive the vaccine as a condition of employment. Vaccine recommendation assessments are performed for those working directly with the agents; those working in proximity but not directly with agents may not be eligible for the vaccine through SUOHC and should contact their primary care physician.