Those are labs, and there's some surge capability, that count of 15 either includes some that can move to BSL4, or there are a few that can do that.
There are 4 hospitals in the nation that have a total of less than 20 beds that are set up for diseases like this. Emory (CDC), the NIH in Bethesda, the biggest with 10 beds is in Omaha, Nebraska, and there's one in Missoula, Montana, not far from one of those BSL4 labs.
As mentioned before, 10 in Nebraska, and they don't have a BSL-4 lab handy; hopefully they have, or are setting up, a mini-lab there, for as Emory realized, it's not practical to send samples from Ebola patients to the hospital's main lab: http://www.nebraskamed.com/biocontainment-unit
There are 4 hospitals in the nation that have a total of less than 20 beds that are set up for diseases like this. Emory (CDC), the NIH in Bethesda, the biggest with 10 beds is in Omaha, Nebraska, and there's one in Missoula, Montana, not far from one of those BSL4 labs.