 For years, people have been looking for a vaccine to chlamydia, which everybody thought was a virus. And in a year, Hilleman discovers it's actually not a virus at all. It was a bacteria. It could be treated with antibiotics. That's what he did as his PhD thesis when he was 25 years old. Wow. A huge accomplishment. Then... 1944. He graduates. From a pretty damn good school. And was wooed by academia. To become a professor.