Read about that the other day. World population was 1.5 billion, 500,000 million infected, 675,000 dead in the U.S. Would have to think we'd have better ways of fighting it today, but in a country as crowded as China with the sanitary conditions they have this could be incredibly bad. African Swine Fever has actually been around for decades but after it got into China in 2018 it killed hundreds of millions of pigs. Not dangerous to humans but demonstrates how intense a serious virus can be in bad conditions.