I have no problem with the idea of a quarantine for people coming back from working with Ebola patients in Africa. I don't think it's hysteria and I dispute the claims of experts that there is "no problem" since carriers aren't contagious until they're showing symptoms. Nobody seems to be addressing the issue of what happens if someone becomes symptomatic whilst out in public. They're not going to magically disappear and reappear in a hospital isolation unit.
Ebola hasn't been a problem in the US so far because we've managed to track and contain it. The problem arises when someone contracts it completely unawares and thinks their symptoms are just plain vanilla flu. What would have happened if Dr. Spencer's symptoms had started while he was out on the town? He was already feeling sluggish. If he'd started sweating a little on the subway, wiped his brow then touched a pole....then someone else comes along and touches that pole and scratches the corner of their eye...oy. Then a couple of weeks later that person, completely unaware that he's a carrier, starts feeling a little off. Meh, it's flu season. Figures he'll struggle into work anyway. Feels progressively worse throughout the day. Develops a fever, spreads a little sweat around the office and on his way home...what's the big deal right? It's only flu. This is how epidemics start and why it's so important to track and contain carriers. It's already ravaging much of West Africa, but small villages are one thing. Once it starts spreading in a city like New York among people who have no idea they have it, all bets are off.
Until one of the "experts" can explain to me how it's not a problem when someone's symptoms come on in public, then I'll concede that quarantine isn't needed for Doctors Without Borders participants. Some of these people have no sense. It has now emerged that Dr. Spencer lied through his teeth initially, when asked if he'd been anywhere prior to calling the emergency services. It was only when they checked his Metrocard and his credit card bills that he was forced to admit that he'd been skipping merrily all over town. And his symptoms could have started at any time.