I don't know what he is working on, but it does not appear to be a vaccine, at least not one of the type that is called a vaccine.
To make a vaccine, you inject a mouse with the virus. The mouse's cells make more viruses, you take the blood out of the mouse, remove the blood cells and then (hopefully) kill the viruses, and put them in a solution that will keep them from degrading.
Then you inject that into a human... the human body sees the viruses and develops antibodies against it.
There is a lot wrong with this process.
Sooo, what is the guy above doing? Looks like he is working with some chemicals.
I do not see any Petri dishes, or any biolab equipment, so he isn't working with the virus.
So, does he have a novel idea about how to create immunity without the virus?
Well, it is probably better than the Gate's Foundation's plan to make an RNA encoder (a virus) that will make the body make an immunity to the virus. (what could go wrong?)