Question

Explain the evolution of drug resistant bacteria using MRSA as an example.

Answer 1

Evolution of Drug resistant bacteria:

The evolution of antibiotic resistant bacteria is considered as an virulence factor.This evolution is spread far and wide and is threatening the health care world wide.The bacteria become resistant to the antibiotics by two ways,they are;

• Mutation
• Other way is by swaping the DNA which is a feature called the horizontal gene transfer.Thus this causes the bacteria to share their resistance gene with others.

Now if we consider MRSA,it is the most notorious superbug is the Gram-positive organism Staphylococcus aureus.This bacteria causes MRSA and it's more accurate to say that these bugs have evolved resistance and   when it comes to evolution,are great evolvers for many reasons. For example, their short generation times and large
population sizes boost the rate at which they can evolve.Bacterial genetics is particularly salient to the evolution of antibiotic resistance: horizontal transfer.Horizontal transfer has important implications for the evolution of antibiotic resistance in bacteria.

When we consider Methicillin-resistant Staphylococcus aureus (MRSA) is a major cause of hospital-acquired infections that are becoming increasingly difficult to combat and treat because of emerging resistance to all current antibiotic classes.These bacteria that are resistant to antibiotics is called the superbugs.Superbugs are omnipresent in the biospher.Superbugs are not the only microbial threats,but they are recognized as a serious threat for treatment and health care.