Ebola: Is a 21-day quarantine period long enough?

Ebola: Is a 21-day quarantine period long enough? HT: Crof.

 Via PLOS Currents Outbreaks: On the Quarantine Period for Ebola Virus. The abstract:

Background: 

21 days has been regarded as the appropriate quarantine period for holding individuals potentially exposed to Ebola Virus (EV) to reduce risk of contagion. There does not appear to be a systematic discussion of the basis for this period. 

Methods: 

The prior estimates for incubation time to EV were examined, along with data on the first 9 months of the current outbreak. These provided estimates of the distribution of incubation times. 

Results: 

A 21 day period for quarantine may result in the release of individuals with a 0.2 – 12% risk of release prior to full opportunity for the incubation to proceed. It is suggested that a detailed cost-benefit assessment, including considering full transmission risks, needs to occur in order to determine the appropriate quarantine period for potentially exposed individuals.