Vaccination: Test Your Understanding
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Can a vaccine target a disease that is not the result of a virus? Explain.
What are some challenges with polysaccharide vaccines, and how have these challenges been overcome?
Use a specific vaccine as an example.
Critical Thinking: Why do attenuated-live vaccines induce a stronger immune response compared
with killed vaccines?
Critical Thinking: Why are oral and intranasal delivery methods preferred for vaccines that target
gastrointestinal or pulmonary pathogens?
Critical Thinking: Explain how herd immunity against whooping cough can protect infants and other
people who are not immunized against the disease. (Hint: observe Figure 1.)
