While 14 days is the safest option for minimizing the spread of COVID-19 to others, the CDC updated its guidance in late 2020 to allow for shorter quarantines under some circumstances, including reducing the burden on individuals. The Wisconsin Department of Health Services also allows for a reduced quarantine period.
UW–Madison’s modified approach adds a further risk reduction step relative to CDC’s updated guidance by requiring a test on or after the 10th day of quarantine. The CDC reports that the median post-quarantine transmission risk posed by an individual who tests negative after 10 days of quarantine is 0.3%. Everyone should monitor themselves for symptoms of COVID-19 and should not be on campus if they have symptoms, except to get a COVID-19 test.