A Study to Assess the Safety of Adacel® Vaccine

Inclusion Criteria : * Male or female (not pregnant) from 18-45 years of age. * Healthy, with no current illnesses. * Have not been immunized against diphtheria, pertussis and tetanus in the past 5 years. * Women of childbearing age will agree to use birth control during the study. * In good health, as verified by the following criteria: Heart rate, blood pressure, temperature and health history. * Able to understand and comply with requirements of the study. * A voluntary consent form is required before participating in the study. Exclusion Criteria : * History of allergy to any ingredient in the vaccine. * A positive pregnancy test (for women of childbearing age) or women who are breastfeeding. * Compromised immune system due to treatment of a progressive disease. * Currently on oral or injected steroids, inhaled high-dosage steroids or other immunodeficiency or toxic drugs. * History of taking Immunoglobulin or other products during the 3 months prior to participating in the study. * Received other vaccines during the 4 months prior to participating in the study. * Has an acute or chronic condition that affects safety (including but not limited to: chronic liver disease, some kidney pathologies, progressive or unstabilized nerve disorders, diabetes and organ transplants). * Experienced a severe adverse event after receiving ADACEL® vaccine. * History of acute illness with temperatures over 37.5ºC during the week before receiving the vaccine. * Human immunodeficiency virus (HIV) infection. * History of alcohol or drug addiction during the past 5 years. * Plans to travel outside of the study area between shots and visits. * History of Guillain-Barré syndrome.