Apr 21, 2014 — A rash of infections in Saudi Arabia could be a warning signal that the deadly virus has reached a tipping point and is ready to spread out of the Middle East, scientists worry.
Apr 11, 2014 — They have recovered from the deadly virus that is ravaging Guinea. They feel blessed by their good fortune. But family and friends are often afraid to welcome them back with open arms.
Apr 10, 2014 — Researchers ignited a debate three years ago when they changed a deadly flu virus so that it could spread between people. Only five mutations are needed to turn the virus into a pandemic threat.
Apr 9, 2014 — Dangerous and impolite: This little guy triggers food poisoning in people by biting off chunks of intestine, chewing on them for a bit ... and then spitting them out.
Apr 9, 2014 — About 150 million people worldwide have hepatitis C, and all should be assessed and treated, the World Health Organization says. The cost of screening and drugs means that won't happen soon.
Apr 8, 2014 — In Guinea, an aggressive strain of the virus has claimed over 100 lives and invaded the capital city. But while it may take months to contain the outbreak, there already are survivors.
Apr 7, 2014 — A young woman who didn't know she was infected with measles went to a Kings of Leon concert in Seattle. Public health investigators have reconstructed her movements to warn the public.
Mar 27, 2014 — India and 10 other Southeast Asian nations have eradicated polio, health leaders say. The milestone means 80 percent of the world's population now lives without risk of the paralyzing virus.
Mar 26, 2014 — PBS traveled to the epicenter of a terrifying epidemic. We're chatting with the film's maker to learn how the world can stop drug-resistant tuberculosis.
Mar 25, 2014 — PBS's Frontline travels to the epicenter of a rising epidemic: drug-resistant tuberculosis that's costly and tough to treat. Join us for a live Twitter chat tonight during the film's premiere.