Near the start of the 20th century, a mysterious and deadly virus terrified Americans, particularly infecting young kids: Polio. Correspondent Rita Braver looks at the scientific arsenal brought to combat the epidemic and develop a vaccine, and talks with documentary filmmaker Carl Kurlander ("The S

This documerntary was produced in 2004 by CBS as part of "Witness", a documentary from CBS news. Origin of AIDS: The Polio Vaccine (CBC 'Witness', 2004) On April 12, 1955 Jonas Salk's polio vaccine was first licensed for public use in the U.S. In the years afterwards 90 million Americans were vac...

The increasing prevalence of new coronavirus variants is raising questions about how well protected those who’ve already had their COVID-19 shots are against evolving forms of the SARS-CoV-2 virus. Here, microbiology and infectious disease specialist William Petri of the University of Virginia answe