and, i need to reiterate that the premise that using antibodies to treat a virus is an "unproven" or "experimental" treatment is just absurdly scientifically illiterate. how do you think your body clears viruses, anyways? pixie dust?

prayer?

the issues trump has in front of him are twofold:

1) this is not a vaccine. so, there's no reason to think he's immune, despite what he said. i mean, maybe he got lucky - maybe his body mounted a proper immune response, meaning the antibody treatment wasn't required in the long run (although you're not going to clear this at his age in a weekend, indicating that the drugs were exceedingly effective). the fact that he was experiencing symptoms suggest his immune system at least reacted, but you won't know if he developed his own antibodies until the ones he was injected with wear off. and, i don't know the time frames involved with that. but, if he didn't develop his own antibodies then he's at risk of catching it again. and, you can imagine the headlines, with that one.

2) it's not entirely clear if they gave him enough to clear it altogether, and that's the only point where this is an experiment. if it got into one of his organs, for example, is the infusion going to root that out? it's the "missed" remnants that he needs to be concerned about, because when the injected antibodies wear off the virus will just get right back to it - if he didn't develop immunity in parallel.

so, is it a "cure"? i'd say yes. 

but, is it an antidote? no - it's hard to say for sure, but he's probably still vulnerable.