Which of the following situations can best be characterized as an example of passive immunity?
A) A 6-month-old infant receives his scheduled immunization against measles, mumps, and rubella.
B) A 9-year-old boy is immune to chicken pox after enduring the infection before 1 year.
C) An 8-year-old girl recovers from a respiratory infection after intravenous antibiotic treatment.
D) A 6-week-old infant receives antibodies from his mother's breast milk.

Question

Quizplus · Accepted Answer

Passive immunity involves the transfer of antibodies from an outside source, such as those from breast milk. Immunization and recovery from illness involve active immunity.

Which of the Following Situations Can Best Be Characterized as an Example