I planned to call my physician today to ask about that. She offered it to me, but last fall, I didn’t think it necessary. She told me it won’t prevent someone from getting pneumonia, but it would probably prevent it from killing them. I wonder if that’s true for the coronavirus.

I'm not sure of what you suggestion is. If you're suggesting that pneumovax will prevent the pneumonia coming from coronavirus, I'm afraid this won't work :( not the same viruses.