Box 1: Revising definitions of quarantine and isolation to account for asymptomatic infection

Standard definitions of quarantine and isolation:

Quarantine “The separation and restriction of movement of people who were exposed to a contagious disease to see if they become sick”

Isolation “The separation of sick people with a contagious disease from people who are not sick”

Revised definitions of quarantine and isolation accounting for asymptomatic infection:

Quarantine “The separation and restriction of movement of people who were exposed to transmissible pathogens to determine whether they are infected”

Isolation “The separation of those infected with transmissible pathogens from others”