The SARS epidemic

In 1950, a 200-page-long directory called "Red Channels " was published in America. It was a list of people working in the media who were suspected of being Communists or Communist sympathisers. It ruined careers and sent actors, writers and directors into exile. Most of the people named in it are no longer alive. But Vincent Dowd has been speaking to former Hollywood actress Marsha Hunt who is still with us, aged 102.PHOTO: Marsha Hunt in 1938 (Getty Images)

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In 1986, the US Supreme Court heard a landmark case which would define sexual harassment as a crime in America. The lawsuit, brought by bank clerk Mechelle Vinson, established that abuse in the workplace was a breach of civil rights. It was built on pioneering legal scholarship by feminist lawyer Catharine MacKinnon, who talks to Sharon Hemans.PHOTO: Mechelle Vinson in 1986 (Getty Images)

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A deadly new form of haemorrhagic fever was discovered in the small town of Marburg in West Germany in the summer of 1967. The first patients all worked at a factory in the town which made vaccines. In the course of their work they had all come into contact with blood or tissue from monkeys from East Africa who were infected with a disease similar to Ebola. Lucy Burns speaks to virologist Werner Slenczka and former laboratory worker Frederike Moos about their experiences of the outbreak.Photo: A Grivet monkey looks out from an enclosure at Egypt's Giza Zoo in Cairo on August 1, 2017 (Mohamed El-Shahed/AFP via Getty Images)

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In 1955 scientists in the US led by Dr Jonas Salk announced they had developed an effective vaccine against polio. The poliomyelitis virus had caused paralysis and death particularly amongst children since time immemorial. Louise Hidalgo spoke to Dr Salk's son Peter, who was one of the first children to be vaccinated by his father, and to a nurse who worked on the polio vaccination programme.PHOTO: Jonas Salk innoculating his son, Peter (Courtesy of March of Dimes)

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Some 300 people died during the first documented outbreak of the deadly disease occurred in the 1970s in the Democratic Republic of Congo - then known as Zaire. The virus was named after the river which flowed close to the village where it was discovered. Two doctors, Dr Jean Jacques Muyembe and Dr David Heymann, were among those who worked to bring the outbreak under control. They spoke to Claire Bowes in 2009.This programme is a rebroadcast.Image: The Ebola virus under a microscope. Credit: Science Photo Library

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In 1918, more than fifty million people died in an outbreak of flu, which spread all over the world in the wake of the first World War. We hear eye-witness accounts of the worst pandemic of the twentieth century.(Photo: An American policeman wearing a mask to protect himself from the outbreak of Spanish flu. Credit:Topical Press Agency/Getty Images)

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The story of Dr. Semen Gluzman, a Ukrainian psychiatrist, who took a stand against the psychiatric abuse of political dissidents in the Soviet Union. During the Cold War, Soviet authorities had many dissidents declared mentally ill and confined them to special psychiatric hospitals for 'treatment'. In the 1970s, a young Ukrainian psychiatrist, decided to write a counter-diagnosis of one of the most famous of these incarcerated dissidents. For this, he would pay a high price. Alex Last speaks to Dr Semen Gluzman about his struggle to oppose Soviet punitive psychiatry. Photo: Semen Gluzman in 1989.(Gluzman)

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