A woman who died last week in northern Sierra Leone tested positive for Ebola, the National Ebola Response Center (NERC) said Monday, in a setback for the country's bid to gain Ebola-free status.

There had been celebratory scenes last week when the country's last known Ebola patient was released from hospital in the central city of Makeni after being cured of the virus, raising hopes the west African nation may finally have beaten the devastating epidemic.

Blue Bell Creameries has resumed selling its products in select locations Monday, four months after the Texas-based retailer halted sales due to listeria contamination.

Blue Bell ice cream is now available at stores in the Houston and Austin areas, including in the company's hometown of Brenham, plus parts of Alabama.

Singapore said Monday it has lifted a two-decade ban on HIV-infected people from entering the country, but will limit their stay to a maximum of three months.

The Health Ministry said the ban was lifted on April 1, "given the current context with more than 5,000 Singapore residents living with HIV and the availability of effective treatment for the disease."

There was the blind man who had the disastrous experience of regaining his sight. The surgeon who developed a sudden passion for music after being struck by lightning. And most famously, the man who mistook his wife for a hat.

Those stories and many more, taking the reader to the distant ranges of human experience, came from the pen of Dr. Oliver Sacks.

To Azaratu Zakaria, Jimmy Carter's battle against the Guinea worm is represented by a scar.

Zakaria was the last person to be declared disease-free in Ghana after more than 20 years of work spearheaded the former president's humanitarian organization, The Carter Center. Zakaria, who is in her 40s, said she and her family have prayed every day since Carter announced this month that cancer has spread to his brain and forced him to scale back his work.

U.S. regulators on Thursday approved Repatha, the second injectable drug of its kind designed for certain patients with stubbornly high cholesterol which puts them at risk of heart disease.

Repatha, also known as evolocumab, is made by Amgen and is part of a new class of drugs known as PCSK9 inhibitors, or antibodies which work on the liver to lower cholesterol.

Teenagers who identify as "goths", a subculture known for its members' black clothes and makeup, have a three times higher risk of depression than non-goth peers, researchers said Friday.

But they could not be sure whether it was a case of depression leading kids to join this particular subgroup, or being caused by it.

As labor pains gripped Junu Shrestha around midnight one day in early July, the heavily pregnant villager set off on foot along a muddy path destroyed in Nepal's earthquake, desperate for help.

She stumbled in the dark for two hours before reaching a handful of medical tents erected after the 7.8-magnitude quake on April 25 flattened her local clinic.

Eight people have died in two days of pneumonic plague on the Indian Ocean island of Madagascar which is hit by deadly outbreaks almost every year, a health ministry official said Wednesday.

Pneumonic plague is rare and more vicious than the commonly-known bubonic strain as it gives antibiotics little time to act and can kill within 24 hours.

An experimental blood test may be able to predict whether a woman with breast cancer will suffer a relapse months before new tumors would be detectable on scans, researchers said Wednesday.

The technology, described in the journal Science Translational Medicine, works by detecting cancer DNA that circulates in the bloodstream.