July 9, 2013 A parasite that plays a role in a range of human illnesses may be more common than you thought. More than a million cats in the U.S. are thought to be spreading the parasite.
June 28, 2013 The world is closer than ever to wiping out polio. But a growing outbreak in the Horn of Africa has health workers worried that the virus could spread to surrounding regions. Thirty-one kids have been paralyzed by the poliovirus in the past two months, and the number is expected to rise.
June 20, 2013 Middle East Respiratory Syndrome emerged a year ago in Saudi Arabia, although the world didn't find out about it until September, when researchers said it was caused by a previously unknown virus that's in the same family as SARS.
June 19, 2013 Some people exposed to tainted steroid injections in last year's meningitis outbreak had slow-moving spinal infections that escaped detection until they had MRI scans. Many of the people didn't have symptoms, or thought the pain was due to their longstanding back problems.
June 14, 2013 Looking for clues to to modern-day leprosy, scientists dig up a 500-year-old mass grave and scan for ancient strains of bacteria in human remains. They find that the bacteria that cause leprosy haven't changed, humans have.
June 13, 2013 Despite the daunting health challenges Haiti faces, the country has achieved a major step toward eliminating the parasitic infection, which causes severe swelling of the legs. Haiti is on track to wipe out the disease within four years, scientists say.
June 13, 2013 Needle sharing and drug use put an estimated 4,000 people at risk for contracting HIV every year. Now, the same medications that are used to treat HIV-positive individuals might also protect the uninfected before they engage in risky behavior.
June 3, 2013 The World Health Organization says lab tests have confirmed the infections in a 2-year-old girl and a 42-year-old woman with the Middle East Respiratory Syndrome Coronavirus. Both patients are close contacts of someone who traveled to Jordan recently.
May 29, 2013 All told, the fatality rate for confirmed infections with the virus has been more than 50 percent. But the true fatality rate won't be clear until the fuller extent of cases, some probably much milder, becomes known.
May 23, 2013 The virus's ability to move between these mammals might not bode well for humans. So far, it appears that H7N9 doesn't pass easily between people, but it could mutate over time and pose more of a threat.
May 22, 2013 A handful of polio infections in Kenya and Somalia could set back efforts to wipe out the virus worldwide, health workers warned Wednesday. The last time there was polio in this region, the virus spread throughout the Horn of Africa into the Middle East and eventually into Indonesia.
May 22, 2013 A measles epidemic in Wales that has infected more than 1,000 people is the fallout from a fraudulent paper linking the vaccine and autism published almost 15 years ago, health officials say. Many of the children and teenagers sick with measles were never vaccinated.
May 16, 2013 Most public swimming pools are contaminated with germs carried by poop, federal researchers found. We swimmers are to blame. Showering before swimming and taking kids to the bathroom often would help.
May 9, 2013 Infecting mosquitoes with a specific type of bacteria makes the insects resistant to malaria. Now scientists have figured out how to get the mosquitoes to pass the infections on to their offspring. If it can done reliably, it might help interrupt transmission of malaria to humans.