Watch Clip
A History of Vaccination
4m 48s
/ TV-PG
Vaccination began as a traditional therapy over a thousand years ago.
NOVA brings you stories from the frontlines of science and engineering, answering the big questions of today and tomorrow, from how our ancestors lived, to whether parallel universes exist, to how technology will transform our lives. Visit the official website to watch full-length documentaries, or explore our world through short-form video, on our digital publication NOVA Next.
Video description: Could you love a baby botfly?
Science shows it’s a small world after all—and nature’s networks follow a similar pattern.
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