A mysterious illness has killed at least 23 people in southern Guinea in six weeks, but the disease has yet to be positively identified, the health ministry announced Thursday.

"A feverish sickness whose first symptoms were observed on February 9 has claimed at least 23 lives, including that of the director of the Macenta district hospital and three staff, out of a total of 36 cases," said Sakoba Keita, the doctor in charge of the ministry's preventive wing.

Plain old Cheerios are no longer made with genetically modified ingredients, but the switch hasn't yet translated to a boost in sales.

General Mills, the company that makes the cereal, in January announced it would start making its plain Cheerios without GMOs, or genetically modified organisms. The move came after a campaign by the group Green America, which prompted fans to express their support on the Cheerios' Facebook page.

The anti-virus drug Tamiflu reduced the risk of death from flu by a quarter among adults who took it during the 2009-2010 H1N1 influenza pandemic, a study said Wednesday.

The findings, published in The Lancet on Wednesday, should be a useful guide to doctors weighing options for treating flu, the authors said.

IBM said Wednesday it was joining a "genomic medicine" initiative, using its Watson supercomputer to deliver customized treatment options for cancer patients.

The U.S. computing group said it was teaming with the New York Genome Center in a program to help doctors develop treatments tailored to each patient's genetic makeup.

Chinese authorities have found 157 dead pigs in a river, state media said Wednesday, a year after 16,000 carcasses were discovered in Shanghai's main waterway, underscoring the country's food safety problems.

The dead porkers were recovered from the Gan river in Jiangxi, which supplies drinking water to the provincial capital Nanchang and is a tributary of the Yangtze, one of China's main waterways, the official news agency Xinhua said.

A cheap drug used to control blood cholesterol may also slow progression of later-stage multiple sclerosis (MS), according to a study published in The Lancet Wednesday.

Scientists found some evidence to suggest that simvastatin may help fight MS a decade ago, but further small-scale trials did not back up the findings.

The anti-virus drug Tamiflu reduced the risk of death from flu by a quarter among adults who took it during the 2009-2010 H1N1 influenza pandemic, a study said Wednesday.

The findings, published in The Lancet on Wednesday, should be a useful guide to doctors weighing options for treating flu, the authors said.

Sita Pariyar had barely recovered from childbirth when her uterus slipped out of her body, making her one of hundreds of thousands of Nepalese women struck by a debilitating reproductive condition.

Sleep-deprived and unsteady on her feet, Pariyar was carrying firewood home to her village in the hilly district of Dhading on the outskirts of Nepal's capital Kathmandu when she felt her uterus collapse.

Health officials say 23 cases of mumps are confirmed in an outbreak at Ohio State University. Eighteen students and a staff member are among those infected.

University and public health officials warned Ohio State students, faculty and staff to take precautions to keep themselves healthy as they headed back to class Monday after spring break.

China has more than halved its tuberculosis rate in 20 years by scaling up steps to ensure patients take their antibiotics, The Lancet, world's leading general medical journal, reported on Tuesday.

The tally of new infections fell from 170 people per 100,000 of the population in 1990 to 59 per 100,000 in 2010 -- a target reached five years ahead of schedule.