Indian doctors on Tuesday angrily rejected claims that they had lied about the amount of weight an Egyptian once believed to be the world's heaviest woman had lost following surgery.

The horrific wounds and gruesome accounts of the victims filling a frontline clinic in west Mosul in Iraq offer a window on the hell inside the last jihadist strongholds.

A new malaria vaccine will be tested on a large scale in Kenya, Ghana and Malawi, the World Health Organization said Monday, with 360,000 children to be vaccinated between 2018 and 2020.

The injectable vaccine RTS,S could provide limited protection against a disease that killed 429,000 people worldwide in 2015, with 92 percent of victims in Africa and two-thirds of them children under five.

Drawn-out deaths. Communities torn apart. Survivor's guilt. Patrick Fallah says his memories of the days when the Ebola virus swept through Liberia are so awful that he sometimes has trouble focusing on the present.

"Sometimes when I have a flashback of the death of my son and others who died in the Ebola treatment unit, I don't want to speak to people. I grieve so much that my mind is not really on what I am doing," said Fallah, 30, who lost his 8-month-old son and stepmother and is president of the National Ebola Survivors Network of Liberia.

The "world's heaviest woman" has shed half her weight -- around a quarter of a tonne -- in the two months she's been in India for treatment, doctors said.

An estimated 325 million people are living with hepatitis B or C and few are aware of their condition, with death tolls from the viruses rising, the UN said Friday. 

The World Health Organization's latest hepatitis report identifies the condition as a grave public health threat that needs an "urgent response."

Court documents unsealed in the investigation into Prince's death paint a picture of a man struggling with an addiction to prescription opioids and withdrawal, with various pills stashed in bottles around the pop superstar's suburban Minneapolis studio and estate.

But the search warrants and affidavits unsealed Monday shed no new light on how Prince got the fentanyl that killed him.

Tummy tucks really hurt. Doctors carve from hip to hip, slicing off skin, tightening muscles, tugging at innards. Patients often need strong painkillers for days or even weeks, but Mary Hernandez went home on just over-the-counter ibuprofen.

The reason may be the yellowish goo smeared on her 18-inch wound as she lay on the operating table. The Houston woman was helping test a novel medicine aimed at avoiding opioids, potent pain relievers fueling an epidemic of overuse and addiction.

Putting a prisoner to death "stays with you for a long time," says Ron McAndrew.

Canadian scientist Mark Wainberg -- described as a "giant" of HIV science and who had recently been working on finding a cure for the condition -- has died at the age of 71, UNAIDS said on Thursday.