Yesterday, the CDC updated their recommendations regarding when someone can end their isolation. The following changes have been made to the guidance with regards to the duration that a person should be fever-free before they may leave isolation:
Prior guidance:
An infected person must isolate for at least 10 days after onset of symptoms, and may be released from isolation if their symptoms have improved AND they have had no fever, without the use of medicines, for at least 3 days.
New guidance:
An infected person must isolate for at least 10 days after onset of symptoms, and may be released from isolation if their symptoms have improved AND they have had no fever, without the use of medicines for at least 24 hours.
The Optimistic Scientist 