Awareness of vaccination status and its predictors among working people in Switzerland.

Background: Adult vaccination status may be difficult to obtain, often requiring providers to rely on individual patient recall. To determine vaccination status awareness and the sociodemographic predictors of awareness for tetanus, hepatitis A and B, tick born encephalitis (TBE) and influenza vaccination.

Methods: Multivariate analyses were used to evaluate a questionnaire survey of 10,321 employees (4070 women and 6251 men aged 15-72 years) of two companies in Switzerland.