Indeed, it is said that European settlers in the American West deliberately presented smallpox infested blankets to Native Americans. But why was smallpox such a deadly weapon?
據說英國移民在大西部拓荒時期，曾將沾有天花病毒的毛毯送給印地安人，造成的種族傷痕至今猶存。而為什麼病毒會成為歐洲征服新大陸的利器？