Most people know they are sick or have an illness when the symptoms start… maybe it’s a cough, sneezing more than usual or a headache that just won’t go away. However, did you know that you can still be the carrier of an illness without displaying any symptoms? This is called being asymptomatic or being pre-symptomatic— but what is the difference between the two terms? You’ve definitely heard these terms lately because of the COVID-19 global health crisis. Especially because this particular illness can be transmitted from person to person when in close contact with each other (via the droplets in the air from talking or breathing out of your mouth). People who are asymptomatic or pre-symptomatic can create especially tricky issues for those in the healthcare industry who regularly see patients in person. So, what’s the definition of asymptomatic and pre-symptomatic?