It's not impossible of course but it's not likely either. Most sick are not walking around, so that limits the chances even more to some that 'may' be incubating it, like the guy that got on the plane. (And no one on the plane is sick.)
Of course it's in our national interest. Our troops are there to protect our country. How well do you think our country could defend itself in a major epidemic from outside threats from Russia or China, for example? What would happen to our economy with even the *real* threat of an epidemic here? (btw, that is the greatest danger here IMO).
We 'fought terrorism over there so we wouldnt have to fight it here' and that is exactly what our involvement is over there. Helping to contain it. Helping them to prevent as much additional spread of the disease because the more that get infected, the greater the chance that it will become more virulent or even airborne.
They do this by helping to build and protect infrastructure. Transport and protect medical supplies. Providing security for our medical personnel and medical supplies (these supplies are regularly stolen and sold on the black market).
And they can be quarantined before returning to the US on American transport planes.
It's obvious you havent thought this through if you dont see how this serves vital American interests. Just a guess but I'd bet you havent thought about the economic issue at all.
A person has sufficient viral community in them to spill over into saliva and contaminate towels, doorknobs, sheets, clothing, etc. where it can remain for hours and can be picked up and transmitted to another person, or sufficient to directly contaminate someone with whom they have bodily contact, especially males with the disease in whom the virus survives well in semen, .. for close to around 24 hours prior to the person with the virus being cognizant that they're experiencing symptoms.
You're simply mimicking the CDC line, and although that's sufficient for general communication to the public of demarcations necessary to present a concept to the lower common denominator public consistently, it simply isn't the truth.
The truth here is as I stated it, and that's a truth relevant to many viruses as they grow in numbers in a body, such as the common cold and the flu.
Indeed, the most dangerous time of contagion is right before one starts to "feel" sick, as it is during that final 24 hours of "incubation" when the viral community is beginning to spill over into saliva and other mucous when a person doesn't yet experience the symptoms that they will go about their business as usual, going to school, work, church, etc., completely oblivious to the fact that they've begun to leave a trail of virus on things they touch that can be picked up by others.
It's not about the carrier "showing" symptoms, as that's a calibration from a hypothetical healthcare provider "observing" a person with the virus and declaring "you've got symptoms".
Prior to such hypothetical observation, the person with the virus spilling out into saliva and other bodily fluids didn't feel sick so he didn't avail himself to this hypothetical healthcare provider for observation.
If he doesn't feel sick, he's not presenting sufficient symptoms to even himself to "show" symptoms.
So for that most dangerous 24 hours, those roughly 24 hours prior to sneezing, prior to stomach upset and diarrhea, prior to fever, prior to body aches, he's reached the "overflow" saturation point where he's spilling virus into his external environment.
It's easy to buy the CDC's "don't panic" line, partially because it presents a scenario whereby we can "feel" like we know when we're safe, and partially because it just sounds good.
But, it's false.
And the degree to which it is false is measured in hours, hours that provide a very dangerous window of contamination that those professionals who must monitor people to prevent an epidemic are most assuredly cognizant of, and will thus respect if they're competent professionals and have not been corrupted by agency politicizing to justify policy.
When the election is over and we open our eyes, it will sadly be too late to wonder what the hell just happened.