It is the first known to be isolated from gorillas . Year - old boy who came to Paris from Kenya found to have RBF 168 . Likely reason for emergence of new virus is human - to - human transmission .
Strain is the first known to be derived from gorillas . 62-year-old woman who moved to Paris from Cameroon found to have RBF 168 . Likely explanation for emergence of new virus is gorilla-to-human transmission .