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.
April 20, 2012 Couples should get tested for HIV together, and if one person is infected, that partner should start treatment right away, the World Health Organization says. This new strategy is aimed at reducing transmission between "discordant" couples, which accounts for most new HIV infections.
February 17, 2012 Research that produced genetically altered bird flu viruses that could pose a danger to people should remain on hold for now. But a panel of experts recommended the details of the experiments should be published.
February 17, 2012 The WHO upheld its guidelines on the safety of hormone injections for contraception yesterday, despite some data that users are at increased risk of HIV transmission. An expert panel says the evidence isn't solid yet, and at-risk couples should use a second method, like condoms, for HIV prevention.
January 27, 2012 Dengue fever cases are soaring worldwide, according to the World Health Organization. They're also hitting closer to home. Two locally acquired cases were reported in Miami last year, and public health experts say we should expect more.
September 28, 2011 It's World Rabies Day. The Centers for Disease Control and Prevention suggests a celebration to learn about how to prevent the spread of the fatal disease.
August 29, 2011 The United Nations' Food and Agriculture Organization warned of a "possible major resurgence" of H5N1 influenza, including a mutant virus that appears to be unfazed by available vaccines.
May 27, 2011 A survey of smokers in 14 countries found that health warnings on cigarette packages registered with most smokers. And among those smokers who noticed them, more than a quarter said the messages led them to think about quitting.
May 24, 2011 The U.S. has argued supplies of smallpox virus are needed for development of better vaccines and treatments. The biggest fear is not a natural outbreak but an act of bioterrorism.
May 16, 2011 Member states of the World Health Organization are expected to decide whether to destroy the last remaining stocks of smallpox virus on the planet. A decison