[ArtDodger]

“why could they just give him the cure and not let anyone know he was given it? “
Wouldn’t that look weird? Everyone in the hospital who contracts the disease dies, except this guy. Some US government doctor walks in, flashes a heavy ID, breezes past all the quarantine guards, gives the white guy a shot and walks out. The white guy walks out a few days later..

[jimpick]

Not everyone dies. It is true that more die than survive but some still live. Getting a shot or IV seems to me to be something that they get whether or not they are white to treat this. And this could have been administered with the cover story that they are prepping him to go to a different place to get better treatment.