WRONG!
The word quarantine was never just for the sick. Quarantine has always been for healthy people who may have been (or will be) exposed to the sick. Isolation is the word used for people who are sick.
Isolation separates sick people with a contagious disease from people who are not sick.
Quarantine separates and restricts the movement of people who were exposed to a contagious disease to see if they become sick. These people may have been exposed to a disease and do not know it, or they may have the disease but do not show symptoms.
https://www.hhs.gov/answers/public-...e-between-isolation-and-quarantine/index.html