Overview. Staphylococcus aureus, often referred to as staph, is a very common bacteria. Approximately 25-30% of healthy people carry this organism on their skin or in their nose. Sometimes, staph causes an infection.Staph bacteria are the most common causes of skin infections in the United States.verview. Staphylococcus aureus, often referred to as staph, is a very common bacteria. Approximately 25-30% of healthy people carry this organism on their skin or in their nose. Sometimes, staph causes an infection.
Bacteria can often be killed by antibiotics because the cell wall on the outside is destroyed, expelling the DNA out of the body of the pathogen, therefore making the pathogen incapable of producing proteins and dies. Bacteria typically range between 1 and 5 micrometers in length.
Antibiotics kill or inhibit the growth of susceptible bacteria. Sometimes one of the bacteria survives because it has the ability to neutralize or escape the effect of the antibiotic; that one bacterium can then multiply and replace all the bacteria that were killed off.