If God saved an American doctor with Ebola, why did he let 1,200 Africans die?

Lucky Dr Kent Brantly, the American doctor who has recovered from Ebola, having been given a dose of the experimental antibody serum Zmapp, whizzed home to the US, and given another dose. He is now thanking God for saving his life. Through the medical team and drugs, he admits, but ultimately, it seems, God was