Question normal

Greetings. This is probably a somewhat basic question so please forgive the curiosity of a bemused 1st year! To my knowledge it seems that rtPCR is currently still the best we have as to rapid detection of Ebola, and in my understanding it is often only several days post-exposure that patients develop enough viral load for a positive assay. I was wondering if you are aware of any novel methods of detection currently under investigation that might in the future allow us to catch the virus in asymptomatic patients any sooner? Thank you kindly for your time!