Biology 9700 · AS & A Level · Antibodies and vaccination
Antibodies and vaccination — practice question
Measles is a widespread viral infection. A vaccine for measles has been available since the 1960s. Vaccination programmes exist for many diseases, including measles. Babies are born with passive immunity to measles, so vaccination is not administered during the first few months after birth.
(a)[3]
Explain in what way active immunity differs from passive immunity.
(b)[2]
Explain why the measles vaccine is not given during the first few months of a child’s life.
(c)[2]
Use the information in Fig. 6.1 to explain why the WHO recommends immunising $90\%$ of children.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Immune system response to antigen” …