They were indeed used earlier than that (see links), but we don't know if they actually spread smallpox (since the virus was old and the tribes were already exp

They were indeed used earlier than that (see links), but we don't know if they actually spread smallpox (since the virus was old and the tribes were already experiencing smallpox). Just because we know one instance was false doesn't rule things out. Who knows what we have lost to time. [1]https://en.wikipedia.org/wiki/Siege_of_Fort_Pitt#Biological_warfare https://en.wikipedia.org/wiki/Siege_of_Fort_Pitt#Biological_... [2]https://archive.org/stream/fortpittlettersf00darl#page/n103/mode/2up https://archive.org/stream/fortpittlettersf00darl#page/n103/...