In 2015 a TED talk was given by a man of authority, not a politician, not a businessman and not associated with religion. He grew up during the Cold war in anticipation of living with a "Nuclear Winter". The talk is focused on the results of a pandemic with a death toll in excess of TEN MILLION People. The man Bill Gates, watch the video. Youtube: https://youtu.be/6Af6b_wyiwI?t=15s