> no one knows they are sick for weeks before symptoms
Weeks? Regular colds and flu have incubation periods of just a few days. Diseases with incubation periods measured in weeks tend to be the more serious ones that don't occur often enough (thankfully) to be used as a good comparison point.
Weeks? Regular colds and flu have incubation periods of just a few days. Diseases with incubation periods measured in weeks tend to be the more serious ones that don't occur often enough (thankfully) to be used as a good comparison point.