Do lots of people get staphylococcal infection, or is it unusual?

Yes lots: Staphylococcal infections are very common. Probably just about everyone has had numerous staph. Infections during a life time. Boils and skin pustules are invariable to to staph.. Post operative wound infections most commonly due to staph.. Worst, or most difficult to treat are mrsa, methicillin resistant staph. Aureus. Many of us have dormant staph. On our skin. Hence need for good hand washing.