By evolving!
This methicillian resistant bacteria was not always that way, but as you may know every time an antibiotic is used there are always some variations of the bacteria that are resistant. They survive, reproduce and pass this resistance on to their progeny. And the process repeats so that soon, as bacterial generations are quick, you have super resistant bacteria. This is evolution by natural selection. Change in a population of organisms over time.
The environment is the natural selector.
By science
It isn't
paleoanthropology
It really doesn't since Human Evolution is only a theory and a highly unlikely one at that.
A mutation is any change in the DNA. Mutations provide the genetic variation that evolution by natural selection needs to select from.
Evolution of chordates is based on pedogenetic theory i.e. primitive chordate ancestor evolved from echinoderm by pedogenesis .
it relateds because over time carrying capacity is changes
Septic (sepsis) MRSA means that the MRSA bacteria has entered into the blood.
MRSA colonized resident means that the person is a carrier of the MRSA bacteria.
MRSA stands for methicilin-resistant staph aureus. MRSA is a type of staph, and a MRSA infection is a kind of staph infection.
does MRSA cause bacteria