“an Ebola researcher coming home”
He is NOT an ebola researcher
As a medical doctor treating Ebola, I think he has the expertise to lend to his doctors and fellow Ebola workers here as they treat him in the hospital for the very disease that they are all working on.
I don’t know where he would rank among Ebola experts and researchers of various types and levels and commitment, but it seems like he would be in there somewhere.