If your immune system is normal most likely you will not get sick with MRSA even with exposure. You can become an MRSA carrer (for example, in the nose) and get sick later in life or infect others. It is important to follow isolation rules when working with MRSA in order to prevent its spread to other people (patients) whose immune system might be down because of age, disease, or treatment. Everything depends where exactly they have MRSA. If it is in the wound, contact isolation is a must (gowns, gloves). If it is the lung then respiratory isolation would be necesary as well (masks).