yes we are doing all that we can even if it can't do anything
"Here’s why: fever can be a sign of a lot of different illnesses, not just Ebola. And thermal scanning proved to be a poor method of catching bird flu carriers in 2009 as well. So presenting with an elevated temperature at an airport checkpoint does not indicate clearly enough that the fevered person is carrying the deadly virus. More importantly, the incubation period for Ebola is two days. As many as 20 days can pass before symptoms show up. That means that an individual could be carrying the virus for two weeks or longer and not even know it, much less have it show up via thermal scan. So what good are these scanners?
“I think that thermal screeners help people feel safe,” Dr. Noreen Hynes with the Johns Hopkins Bloomberg School of Public Health told Defense One.