MRSA in Multiple Systems?

If your patient has MRSA in her sputum, she needs to be isolated or cohorted with another MRSA positive patient. She absolutely can spread MRSA by handling her own sputum and then touching another patient or their things. Staff can also spread her mrsa around without using proper precautions. She should wear a mask when outside her room and her hands should be washed carefully before leaving the room. Her blisters and/or other lesions should be cultured and if positive, should be covered if she is out of her room.
She can spread her own mrsa in the sputum to other parts of her body. My father, who died recently from HA MRSA pneumonia, spread MRSA from his sputum..to his hands....to indwelling catheter, to his bladder. In fact, that is where his mrsa was first diagnosed, even though he was coughing, had pneumonia on xray and had a productive cough. I had to request a sputum culture.
So, in answer to your question, your patient can transmit MRSA, (colonized or infected with symptoms) to other parts of her body and to other patients.