As a health care worker, i am keenly aware of how important it is to avoid harming my patients. i worry about inadvertently transmitting an infectious disease to an already compromised individual. according to the cdc, what is the most important thing i can do to avoid this?

Ihave a really high metabolism and only weigh 70 pounds (13 almost 14). people always ask me two questions: do you ever eat and how do you eat so much and stay so skinny.i am worried that a high metabolism wont me forever. what are some safe steps i can take to maintain being fit. (also, i already work out i am a dacer so i get cardio a lot)