Changing Pathgogens
- Created by: amity.dauntless.erudite
- Created on: 26-04-15 11:15
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- Changing Pathgogens
- Some Pathogens ( particularly Viruses) can mutate making a new for called a mutation
- Very few people are immune so diseases travel quickly
- Disease that spread across a country are called a Epidemic- the world a pandemic.
- Antibiotic - resistant bacteria
- MRSA stands for MEthacilin-resistant staphlococcus aureus
- The MRSA is a 'super bug' which is a bacterium that has evolved through natural selection.
- MRSA and other bacteria have become resistant to the common antibiotics.
- Mutations of pathogens produce new strains, some are resistant to antibiotics.
- Antibiotics kill individual pathogens of the non-resistant strain.
- the resistant bacteria survive and reproduce rapidly and a whole population of of resistant bacteria is produced. This is n natural selection.
- Some Pathogens ( particularly Viruses) can mutate making a new for called a mutation
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