Clinical Scenario:
A 9-day-old newborn is brought to the emergency department because he has stopped feeding and develops repeated episodes of generalized body stiffening whenever he is handled. He was delivered at home, and the umbilical cord was cut with an unsterilized blade. The mother did not receive tetanus toxoid during pregnancy. The infant is managed in the neonatal intensive care unit and gradually recovers.
Before discharge, which of the following is the most appropriate recommendation regarding tetanus immunization?
A. No vaccination is required after recovery
B. Start the routine tetanus vaccination schedule according to age
C. Give a single booster dose at 5 years of age
D. Delay vaccination until 1 year of age
E. Administer only tetanus immunoglobulin
Correct answer & Explanation:
Correct Answer: B. Start the routine tetanus vaccination schedule according to age
Explanation: Tetanus neonatorum/ tetanus vaccination
Tetanus neonatorum occurs due to contamination of the umbilical stump with Clostridium tetani spores, particularly in infants born under unhygienic conditions or to mothers who are inadequately immunized.
A common misconception is that recovery from tetanus confers lifelong immunity. This is incorrect.
The amount of tetanus toxin required to produce clinical disease is too small to stimulate a protective immune response. Therefore, natural infection does not result in immunity.
After recovery, the infant should begin or continue the routine tetanus-containing vaccination schedule appropriate for age, irrespective of the previous illness.
Why the other options are incorrect
A. No vaccination is required after recovery
Incorrect. Natural tetanus infection does not produce protective immunity, so vaccination is still essential.
C. Give a single booster dose at 5 years of age
Incorrect. The infant requires the complete primary immunization series, not just a booster.
D. Delay vaccination until 1 year of age
Incorrect. Vaccination should be started according to the routine immunization schedule as soon as the child is clinically stable and age-appropriate.
E. Administer only tetanus immunoglobulin
Incorrect. Tetanus immunoglobulin provides passive, short-term protection and has no role as long-term immunization after recovery.
Learning Points
- Neonatal tetanus usually presents between 3 and 14 days of life with:
- Poor feeding
- Generalized stiffness
- Painful muscle spasms precipitated by handling or noise
- Recovery from tetanus does not confer immunity.
- All patients with tetanus should receive active immunization with a tetanus-containing vaccine after recovery, following the routine age-appropriate schedule.
- Prevention depends on maternal tetanus vaccination, clean delivery practices, and sterile umbilical cord care.
This question tests a frequently examined postgraduate concept: the distinction between natural infection and protective immunity in tetanus.
