Maurice Hilleman: The greatest 20th Century figure you’ve never heard of. “Of the fourteen vaccines recommended in the current vaccine schedules, Hilleman developed eight.” https://humanprogress.org/article?p=1724 pic.twitter.com/fhs7WfTWqs
0 replies
1 retweet
6 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.