Apparently the virus had naturally selected in the trenches to become much more deadly. People mildly ill remained in the trenches, and so the virus could not spread. But those becoming gravely ill were taken to military hospitals, were the virus could spread.
Where is the evidence for the increased spreading through military hospitals? It’s a nice story, and plausible.
Where is the evidence for the increased spreading through military hospitals? It’s a nice story, and plausible.