September 4, 2012 The results comes from Zanzibar, an island state of Kenya, where half the people in six rural and urban areas received two doses of oral cholera vaccine. The vaccinations led to fewer bacteria circulating, lowering the infection risks even for those who weren't vaccinated.
August 31, 2012 The tax incentives are intended to defray the organ donor's cost in medical care, travel and lost wages. By federal statute, it's illegal to pay someone for the organ itself. But the modest breaks available in some states haven't made a dent.
August 29, 2012 So far, two Missouri farmers are the only known cases of the tick-borne virus in the world. But experts are sure they'll find more. The men recovered but suffered serious illness that required hospital care and weeks of convalescence.
August 29, 2012 Every state except Alaska and Hawaii has reported West Nile virus in people, birds or mosquitoes. The Centers for Disease Control and Prevention expects human cases will rise through October. In Texas, the worst-hit state, deaths reached 31.
August 29, 2012 A high proportion of deaths in children during the swine flu pandemic occurred in kids who had neurologic diseases, such as cerebral palsy and epilepsy, or developmental disorders. Those conditions can affect breathing, swallowing and coughing.
August 22, 2012 Icelandic scientists have found solid evidence that older men have more random mutations in their sperm cells. They're warning that can cause autism, schizophrenia and a long list of other genetic diseases in their offspring. Their findings are reported in the journal Nature.
August 21, 2012 Long-term gains in longevity continue. Today's 65-year-olds can expect to live a tad over 20 more years. That's a huge jump from 1980, when 65-year-olds could expect 14 more years of life. A big part of the reason is that deaths from heart disease and stroke have plummeted by nearly 50 percent.
August 17, 2012 After a successful project to vaccinate Haitians against cholera, the World Health Organization is calling for the establishment of a global stockpile of the vaccine to respond to outbreaks like the one that struck Haiti.
July 27, 2012 Researchers say that expanding anti-retroviral treatment to all HIV-positive people in couples with one partner who isn't infected is cost-effective even in developing countries with limited budgets.
July 26, 2012 The two patients in Boston seem to be free of HIV after treatment for cancer, Harvard researchers say. But they're still on antiviral drugs, unlike the so-called Berlin patient, who's the only person in the world to be fully cured.
July 24, 2012 Black high school students are engaging in risky sexual behavior far less often than they were 20 years ago, a study found. But their condom use is also dropping, leading some to worry that HIV rates within the black community may not go down.
July 24, 2012 Few strategies to prevent HIV infection are so effective, or so thoroughly proved. Yet needle exchanges aren't offered in some places that have been hit hard by the virus. In the U.S. there is pressure on funding that raises concerns the programs could be curtailed.
July 23, 2012 A new approach in San Francisco provides HIV testing and treatment for patients with the virus who didn't know they were at risk. "Test and treat" requires long-term vigilance by doctors and patients, but early evidence suggests that it is reducing HIV in the city.