Health Promotion第 31 / 120 题

According to recommended immunization schedules, an infant should receive the first dose of the hepatitis B vaccine at what age?

a.Shortly after birth
b.At 12 months
c.At 4 years
d.At 11 years

解析

The first hepatitis B dose is recommended shortly after birth, ideally within the first 24 hours. The series continues in infancy. Early vaccination protects against perinatal transmission.

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