By Olga Khazan
In June 2014, Rex Archer, the director of health in Kansas City, Missouri, quarantined five families during a measles outbreak because several of the families’ members had contracted measles. The residents were told to stay in their home and avoid returning to work for several days.
Quarantine is a necessary, though difficult, measure that public-health officials sometimes take for people who are unvaccinated or at high risk of contracting a very contagious illness. In the case of measles, quarantine can last three weeks. Breaking quarantine can be a crime—one Wisconsin man was recently charged with a misdemeanor for going to the gym when he was supposed to be confined to his home.