Several rapid detection tests for Ebola have been developed, though they are not in widespread use at this point. The goal is to have a test which takes minutes rather than hours, and can be used out in the field.
A new two-step vaccine against the disease has shown promise in early clinical trials. If it pans out, this killer may be contained in the future.
UPDATE: Here’s a photo of one of the prototypes, a cellphone-sized device which delivers results in less than an hour.