"Because its incubation period is likely to be as much as a week, travelers can be harboring the infection and show no symptoms." #Coronavirus

What must be done to head off the coronavirus threat

"First, we need to better understand the nature of this bug, and its severity. The illness may be more widespread than we realize in the fog of viral war.  A key to containing the virus’s wider spread will be developing effective point-of-care diagnostics to implement more widespread screening of patients."