Keeping them under wraps might be a good thing. No one will come visit them, they can't blend into the crowd, someone is in charge of bringing them food. They are whining about it, but tough toenails. They are where they cannot infect other people.
Otoh, if they are infected, they are flushing more ebola into yet another sewer system. Ebola likes dark caves.
We really do not know if they are being watched or if anyone is bringing them food. They could be out running around.
Just because the media and The CDC say that is the case doesn’t make it truth.