Hepatitis B Vaccine
Hepatitis B Vaccine ( 4 Questions)
A nurse is reviewing the immunization schedule for hepatitis B vaccine with a parent of a 2-month-old infant.
The nurse informs the parent that the infant should receive the second dose of the vaccine at what age?
1 month is too early for the second dose. The minimum interval between the first and second doses is 4 weeks.
2 months is also too early for the second dose. The minimum interval between the first and second doses is 4 weeks, and the second dose should be given at least 8 weeks after the first dose.
The infant should receive the second dose of the hepatitis B vaccine at 4 months of age. This is based on the recommended 3-dose vaccine series for infants, which includes a birth dose, a second dose at 1 month, and a third dose at 6 months. The 4-dose combination vaccine series, which includes a pentavalent or hexavalent vaccine, also requires a birth dose, followed by doses at 6 weeks, 4 months, and 6 months.
6 months is too late for the second dose. The second dose should be given at least 8 weeks after the first dose, and the third dose should be given at least 8 weeks after the second dose and at least 16 weeks after the first dose.
The correct answer is choice C. The infant should receive the second dose of the hepatitis B vaccine at 4 months of age. This is based on the recommended 3-dose vaccine series for infants, which includes a birth dose, a second dose at 1 month, and a third dose at 6 months. The 4-dose combination vaccine series, which includes a pentavalent or hexavalent vaccine, also requires a birth dose, followed by doses at 6 weeks, 4 months, and 6 months.
Choice A is wrong because 1 month is too early for the second dose. The minimum interval between the first and second doses is 4 weeks.
Choice B is wrong because 2 months is also too early for the second dose. The minimum interval between the first and second doses is 4 weeks, and the second dose should be given at least 8 weeks after the first dose.
Choice D is wrong because 6 months is too late for the second dose. The second dose should be given at least 8 weeks after the first dose, and the third dose should be given at least 8 weeks after the second dose and at least 16 weeks after the first dose.