The problem here is exactly what's also hitting the world's chocolate supply. The disease is bad enough, but the real problem is that all of Madagascar's vanilla orchids come from clones of one cultivar. A few researchers have already been working on finding new fungus-resistant varieties, of both cacao trees and vanilla orchids, but they've also been warning about something like this for decades. Commercial "Cavendish" bananas are already being attacked, and might be extinct in another fifteen years, and now it's time for chocolate and vanilla.