Administration of a full primary immunization series consisting of 3 doses of tetanus toxoid provides protective immunity for how many years ?
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Answer: B. 10
Explanation
A complete primary immunization series of tetanus toxoid provides protective immunity lasting for ten years. Tetanus booster shots are recommended every decade to maintain sufficient circulating antibody titer levels. Option B correctly identifies the standard duration of protective immunity following primary immunization series. Tetanus is a severe neurological disease caused by potent neurotoxins produced by Clostridium tetani bacteria. Primary vaccination involves administering toxoid antigens to stimulate immunological memory cell production safely. Serological titers gradually decline over time, necessitating periodic booster immunizations to ensure ongoing protection.
Emergency departments routinely evaluate patient vaccination histories following deep or contaminated skin puncture wounds. Public health vaccination schedules prevent widespread incidence of vaccine-preventable bacterial infections globally. Occupational health guidelines require healthcare workers to maintain up-to-date tetanus immunization records. Five years is too short for standard adult tetanus immunity intervals under routine guidelines. Fifteen years exceeds the standard recommended window for routine adult tetanus booster immunizations. Twenty years represents an excessively long interval between required booster doses for protective immunity.
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