MRSA, or Methicillin-Resistant Staphylococcus Aureus, is a type of bacteria that has become resistant to many antibiotics, particularly methicillin. This resistance makes MRSA infections more difficult to treat, leading to serious health complications. The evolution of MRSA highlights the principles of natural selection as it adapts to survive in environments with high antibiotic usage, showcasing the ongoing arms race between bacterial evolution and medical treatments.
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