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How does immunisation against diseases such as diphtheria and polio limit the spread of these infectious diseases? (A) Immunisation kills the relevant pathogens - HSC - SSCE Biology - Question 14 - 2001 - Paper 1
Question 14
How does immunisation against diseases such as diphtheria and polio limit the spread of these infectious diseases? (A) Immunisation kills the relevant pathogens. (... show full transcript
Worked Solution & Example Answer:How does immunisation against diseases such as diphtheria and polio limit the spread of these infectious diseases? (A) Immunisation kills the relevant pathogens - HSC - SSCE Biology - Question 14 - 2001 - Paper 1
Step 1
D) Immunisation reduces the multiplication of the relevant pathogens in immunised hosts and this reduces the chance of other people becoming infected.
Answer
Immunisation works primarily by stimulating the immune system to recognize and attack specific pathogens. By doing so, it creates an environment in which the body can mount an effective response to infections like diphtheria and polio. When individuals are immunised, the relevant pathogens are less likely to multiply within their bodies, thus reducing the likelihood of spreading these diseases to others. This herd immunity effect is crucial in controlling outbreaks and protecting those who cannot be vaccinated.