December 6, 2013 Officials in China's commercial capital ordered schoolchildren to stay indoors, construction to halt and even delayed flights because of the city's highest-ever pollution levels.
December 6, 2013 The only person known to have been cured of AIDS got a bone marrow transplant, so when two AIDS patients in Boston appeared to be free of the virus after transplants, scientists hoped they were cured, too. But the HIV virus has returned in both.
December 2, 2013 The administration is pledging $100 million toward a project to stop HIV infections once and for all. There's growing optimism among scientists that it may be possible to get patients' immune systems to control HIV without drugs, or even to eliminate the virus from the cells of infected people someday.
December 2, 2013 The polio outbreak in Syria has spread to four cities, and new cases are suspected each day. But U.N. agencies responsible for combating the outbreak can work only with the Syrian government. This limitation has hobbled vaccination efforts in rebel-held regions, where the virus was first detected.
November 26, 2013 A fresh analysis finds that the death toll from the H1N1 swine flu in 2009-10 was severely underestimated. The Americas were hit much harder than Europe or Australia. And the deaths occurred in a much younger population than normally affected by the flu.
November 22, 2013 When an Afghan toddler in Albuquerque was tested for lead at preschool, the child's blood levels were off the charts. A baby's brother's was, too. Why? It turns out that kajal, a traditional eyeliner used by the family, was 54 percent lead. It's a reminder of the health hazards posed by traditional cosmetics.
November 21, 2013 What would it take for people to like using condoms? Inventors say it's all about the fit and feel. The 11 winners in a competition sponsored by the Bill & Melinda Gates Foundation include one condom made from beef tendons, and another that's heat-activated for a glove-like fit.
November 19, 2013 It can be tough to stop the plague from spreading in rural Uganda because most villages don't have medical doctors to diagnose the deadly infection. But healers and herbalists are common. A scientist has trained them to detect the illness and refer patients for modern treatment.
November 12, 2013 As horrific as Haiyan has been, the disaster likely won't reach the same level of death and injury as the Indian Ocean tsunami of 2004 or Haiti's 2010 quake, disaster specialists say. Better communication systems in the disaster area are one reason why.
November 11, 2013 More than 600,000 have been left homeless and hungry by the devastating storm. In response, humanitarian agencies are mounting the largest relief operation since the Haitian earthquake in 2010. The biggest challenge right now is getting the basics — clean water and food — to the hardest hit areas.
November 8, 2013 The recent discovery of polio in Syria and Israel should be a wake-up call to European health officials, scientists say. Low vaccination rates in some regions could offer the crippling virus a chance to reenter Europe and possibly gain a foothold. Vaccines used there also make it more likely that people can spread the virus.