WHO criteria for releasing patients from isolation: no repeated PCR tests required for most patients who.int/news-room/comm…
Similarly, the CDC does not recommend repeated PCR testing for most patients: cdc.gov/coronavirus/20…
Story about excessive isolation: a mother and newborn kept apart for several weeks, with experts commenting that it shows the limitations of PCR as a tool to indicate quarantine periods
2. July 23-24: CDC updates school reopening guidance, after the President and administration officials criticize their recommendations and announce that the previous guidance will be revised
3. May 28: CDC removes guidelines about increased risk from singing (and after this, as was already evident at the time, there were outbreaks after choir activities)