6.7 Response to infection continued

Question 1

What is active immunity

Answer 1

• Type of immunity your body gets after making its own antibodies after being stimulated by an antigen

Question 2

What is passive immunity

Answer 2

• Type of immunity you gain when giving antibodies from another organism

Question 3

Explain how treatment with inactivated poliovirus cause the body to produce antibodies to survive

Answer 3

• Inactive polio has antigens on surface which will bind to complimentary b cell receptor
• Therefore, B cell will become the APC
• Active T helper cell will bind to APCs and produce cytokines
• Which causes the B cell to divide into plasma cells that secrete antibodies

Question 4

What are the pros of vaccination

Answer 4

• Gives protection to the individual of disease
• Pool of infection is reduced and so herd immunity protects those who are not vaccinated
• Cost is kept to a minimum

Question 5

What are the cons of vaccination

Answer 5

• Some attenuated pathogens are cultured in eggs, this may cause allergic reactions for some
• Some children have extreme immune response to vaccination
• May only provide benefit to society and individuals

Question 6

What is heard immunity

Answer 6

• Where enough people have been vaccinated so that transmission is unlikely