Detailed text transcripts for TV channel - CNN - 20140802:15:28:00
>> reporter: co-discovered ebowl fla 1976, almost 40 years later doctors still don't know how to prevent it or where it lurks between epidemics. >> it came out of the blue in west africa. >> reporter: one leading theoryish bats are carrying ebola possibly spreading the virus to other animals and then to people. testing the theory is difficult because outbreaks are rare and little market demand for a vaccine. money for research often comes from the government. countries like the u.s. worry it could be used in an ebola terror attack. studies have been promising, saying real world testing is what...