This week, Endless Thread goes underground and back in time -- into what just might be the most important vault in the world. What's inside that vault? A treasure that originates with a Russian scientist during World War II.
Boston area listeners, join the Endless Thread team on July 25 for a behind-the-scenes look at our five-part series, "Infectious: The Strange Past and Surprising Present of Vaccines – And Anti-Vaxxers." Event info: https://wbur.fm/2XXJIts