Vaccination and drugs
- Created by: poppyfelton
- Created on: 21-02-14 15:17
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- Vaccination and drugs
- vaccinations involve injecting small amounts of dead or inactive micro-organisms. They prevent disease.
- these carry antigens which cause your body to produce antibodies to attack them even though it is harmless
- if micro-organisms of the same type appear again the white blood cells can rapidly mass produce antibodies to kill off the pathogen
- Pros of vaccination: - they have helped to control lots of infectious diseases e.g tetanus&polio -epidemics can be prevented
- Cons of vaccination: - they don't always work - although its rare, some people have a bad reaction to vaccinations
- drugs such as asprin are just pain killers and do not tackle the disease
- antibiotics kill/prevent the growth of the bacteria causing the problem without killing your own body cells
- antibiotics do not destroy viruses as viruses reproduce using your own body cells making it difficult to develop drugs that would destroy the virus without destroying your body cells
- bacteria can become resistant to antibiotics
- the individual resistant bacteria will survive and reproduce and the population of the resistant strain will increase
- vaccinations involve injecting small amounts of dead or inactive micro-organisms. They prevent disease.
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