Question

A preterm infant, born at 32 weeks of gestation with a birth weight of 1.9 kg, requires which vaccines?

• A. Hepatitis B, BCG, OPV
• B. BCG, OPV
• C. OPV only
• D. Hepatitis B, BCG

Hint:

Preterm Vaccination Rules: Preterm infants should be vaccinated according to their chronological age (not corrected gestational age). For infants $<2\text{ kg}$, the birth Hep B dose is given but not counted toward the 3-dose series!

Answer 1

The Correct Option is A

Concept:
Preterm and low-birth-weight infants are at heightened risk for vaccine-preventable infections due to lower baseline maternal transplacental antibody transfer and an immature immune system.
Standard national and international immunization guidelines dictate that medically stable preterm infants should receive routine birth vaccines according to their chronological age.
Explanation:
• In standard national immunization programs (such as the Universal Immunization Programme WHO guidelines), the scheduled birth vaccines include:
1. BCG (Bacille Calmette-Guérin)
2. Oral Polio Vaccine (OPV zero dose)
3. Hepatitis B birth dose

• For preterm infants with a birth weight $\ge 2.0\text{ kg}$, the birth dose of Hepatitis B is counted as part of the primary series. For infants $<2.0\text{ kg}$ (like this $1.9\text{ kg}$ infant), the birth dose of Hepatitis B is still administered at birth for post-exposure prophylaxis early protection, though it is not counted as part of the 3-dose primary series (a 4-dose schedule is completed).

• BCG and OPV zero dose are safely administered at birth or upon clinical stabilization prior to hospital discharge.

• Therefore, a clinically stable $32$-week preterm infant weighing $1.9\text{ kg}$ is eligible to receive all three standard birth vaccines: Hepatitis B, BCG, and OPV.
Final Answer:
The newborn is eligible to receive Hepatitis B, BCG, and OPV at birth.