A British nurse, Pauline Cafferty, is back in the hospital this week in serious condition with complications from her bout with Ebola in January.
Researchers developing ways to prevent Lyme disease report promising results with an approach that stimulates the immune system to ward off infection.
Nearly 9 million U.S. children are not fully vaccinated against measles and risk getting infected, researchers say in a new report.
Ebola has been detected again in British nurse Pauline Cafferkey, who was thought to have made a full recovery earlier this year.
U.S. researchers say they've come up with a formula that can show someone's sexual orientation by looking at genetic changes.
Elephants live a long time but they don't get cancer like people do. Scientists think they know why.
Two teams of researchers have grown rudimentary organs from stem cells: a primitive kidney and the beginnings of an intestine.
U.S. oncologists, aware that patients are paying more of the costs of expensive cancer drugs, are increasingly declining to prescribe medicines that have scant or no effect, even as a last resort
Patients may be more likely to harm themselves or attempt suicide after weight-loss surgery, a Canadian study suggests.
A new study says children living near the Fukushima nuclear meltdowns have been diagnosed with thyroid cancer at a rate 20 to 50 times that of childre