A person has received complete immunization against tetanus 10 years ago. Now he presents with a clean wound without any lacerations from an injury sustained 2.5 hours ago. He should now be given

Active immunisation is not only the most effective method of prophylaxis but also the only means whereby tetanus following unnoticed injuries can be prevented. This is achieved by spaced injection of formol toxoid, which is available either as plain toxoid or adsorbed on aluminium hydroxide or phosphate. A full course of immunisation confers immunity for a period of at least ten years. A booster dose of toxoid is recommended after 10 years. A booster dose of toxoid is given if wounding occurs three years or more after a full course of immunisation. Reference: Textbook of Microbiology; Anathanarayan and paniker&;s; 9th edition; Page no: 262, 263