This disease is largely preventable by vaccination. Which of the following best explains the reason for the failure of the earlier vaccination to prevent this child's illness?
A. Vaccination against this disease is not part of the earliest childhood vaccines, it is given only after 18 months
B. The vaccine used was defective
C. The child was exposed and infection initiated before an active immune response via vaccination could occur
D. Early in infection, a T cell response was needed and this child could not yet make an adequate response
Answer:C
This disease is largely preventable by vaccination. Which of the following best explains the reason for the failure of the earlier vaccination to prevent this child's illness?
A. Vaccination against this disease is not part of the earliest childhood vaccines, it is given only after 18 months B. The vaccine used was defective C. The child was exposed and infection initiated before an active immune response via vaccination could occur D. Early in infection, a T cell response was needed and this child could not yet make an adequate response