by David Gutierrez, Natural News:
As many as 12 percent of Ebola patients may not show symptoms for more than 21 days after infection, thereby rendering current quarantine practices unacceptably short, according to a new analysis conducted by pathogen transmission expert Charles Haas of Drexel University, and published in the journal PLOS Currents: Outbreaks.
A disease’s incubation period is the time that passes between initial infection and when a person begins to show symptoms. Because previous studies have suggested that Ebola has a maximum 21-day incubation period, many health institutions including the U.S. Centers for Disease Control and Prevention (CDC) have recommended 21-day quarantines of those potentially exposed to Ebola. If they do not show symptoms after that time, they are presumed to be safe.