You shouldn't put it past him, though. And Trump has many many supporters already sympathizing with his infection. China's trust with the world at large is at its lowest ever.
All in all, it's not hard to imagine this will bring in a ton of votes and approval ratings by virtue of inspiring American nationalism. I don't doubt his infection, but this is a very advantageous situation for Trump overall. If he dies, he goes down as a hero because of the insane fervor it will incite. The same fervor people are so worried about now.