https://archive.vn/9lfwd#selection-1019.0-1019.983 https://archive.vn/9lfwd#selection-1019.0-1019.983 thought this was a great article, with the disclaimer as

https://archive.vn/9lfwd#selection-1019.0-1019.983 https://archive.vn/9lfwd#selection-1019.0-1019.983 thought this was a great article, with the disclaimer as usual that parts of it are pretty nuanced and don't know if i agree with all of it. one part i'd agree with is the part you quoted: There are many answers this part was insane: Still, doctors faced a prodigious challenge: how to deliver the stuff around the world in an era without cold storage, airplanes, or cars. They settled on distribution methods that were, by any reasonable estimation, extremely strange and a little ingenious. In the early 1800s, Spain recruited 22 orphaned boys to bring the vaccine to the Americas on their body. Two boys were vaccinated immediately before their ship’s departure. When pustules appeared on their arms, doctors scraped material from them to jab two more children on board. Doctors continued this daisy-chain routine until the ship reached modern-day Venezuela, where they began using the most recent pox eruption to vaccinate people in the Americas. Without any advanced storage technology, they had managed to transport history’s first vaccine more than 4,000 miles, in perfect condition. Arm-to-arm, the vaccine traveled to Mexico, Macau, and Manila. Within 10 years of Jenner’s paper, the vaccine had gone global.