After four decades of dedicated research on HIV, scientists have made extraordinary progress in treating the disease. But we still don’t have a vaccine or a cure. On today’s show, we’re joined by two veteran scientists who have dedicated their careers to HIV research. First up is Christine Rouzioux, a virologist from the Nobel Prize winning team of scientists who first identified the HIV virus. For the second half of the show we talk with Richard Koup from the National Institutes of Health, who explains why it’s so hard to create an HIV vaccine.

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For a long time, people could tell that there was some connection between chickenpox and shingles. But exactly how they were related was a mystery. Then, in the 1950s, a family doctor shipped out to a remote Scottish island to investigate an outbreak, and made a discovery that shaped our understanding of shingles. On today's show, Ann Arvin, professor emerita at Stanford Medical School, tells us that detective story. Then Robert Johnson of the University of Bristol explains what he's learned about treating pain in his decades working with shingles patients.

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Almost everyone on earth has Epstein-Barr virus. Usually it's pretty mild - you get sick, you get better. But the virus lives on in your body forever. Today, we talk with Dorothy Crawford (author of "Cancer Virus") about how one obsessive researcher uncovered a link between Epstein-Barr and cancer, and changed the way we think about viruses. Later in the show, we talk with Bill Robinson about his groundbreaking discovery of how Epstein-Barr can cause multiple sclerosis and other autoimmune diseases.

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What did the 2014 Ebola outbreak teach us about preventing future pandemics? Our guests this week, Christian Happi and Pardis Sabeti, are world experts on disease surveillance, and have worked together fighting infectious disease in Africa for over a decade. Happi shares a gripping account of how he courageously helped stop Ebola from spreading in Nigeria during the 2014 West Africa outbreak. Then Sabeti explains how a new era of surveillance may help prevent future pandemics.

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Why has rabies invaded our nightmares for centuries? Author and veterinarian Monica Murphy tells us about the cultural history of rabies (which involves vampires and werewolves!) and how our long nightmare with the disease came to an end. Then, wildlife biologist Kathy Nelson tells us about a surprising program that works to control raccoon rabies… from the sky.

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Incubation Season 2 begins October 17th.

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Can bacteriophages help us in the fight against antibiotic-resistant infections? Author Tom Ireland joins the show to discuss the fascinating world of bacteriophages, also known as phages – viruses that attack bacteria.. Then, Ben Chan, a researcher with a fridge full of phages, tells the story of what it was like putting them to use in a high-stakes case.

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Why do we all know so little about the Herpes Simplex Virus (HSV), despite the fact that herpes infections are common and chronic? First, we get some Herpes 101 from researcher Anna Wald. Then, we speak with Ella Dawson, a sex and culture critic who is one of the billions of people living with HSV–1.

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