It is a tremendous payoff, like the space program in the sixties and seventies. They are facing death themselves if it fails, or if a mistake was made. Because of such a sacrificial attitude and spirit, surely the cure is forthcoming. That is the exact prevention, and the cure, what's more. Absolute sex binds true couples together in eternal marriage, whereas free sex is irresponsible and destructive.
Absolute sex is more joyful and gives long-lasting satisfaction than furtive or rebellious free sex.
So there will be no cure as long as people keep doing that. Simultaneously both in Russia and the USA were announced two separate cures, one using radioactivity and the other using vaccination. Of course, the quest is not done. The cures and treatments must get better and better. Then the disease must be eradicated.