Sample B: Drained pus, grown on nutrient agar: staphyloccus aureus

A 25 year old female presented to her GP with pain, redness and purulent swelling at a site on her lower abdomen.  Two weeks prior to presentation the patient had been to a music festival and had undergone navel piercing on impulse.

for the microorganism, give at least one example of a relevant virulence factor and explain how this enhances pathogenicity