With Facebook co-founder Mark Zuckerberg about to become a dad, the social network boosted the amount of time fathers can take off to bond with their new babies.

Beginning with the new year, dads working full-time for Facebook anywhere in the world will have the option of taking four months' paid leave.

A sizeable percent of gay American men and injection drug users are at substantial risk of HIV and should take a powerful, preventative drug to help avoid infection, American health officials said.

Taking pre-exposure prophylaxis (PrEP) daily can drastically reduce the risk of HIV infection, but the treatment is currently under-prescribed, the U.S. Centers for Disease Control and Prevention said late Tuesday.

Almost all human organs donated for transplant in China go unused, state-run media said, after years of controversy about the use of body parts from executed prisoners.

Authorities expected to have more than 2,500 organ donors this year, the Beijing Youth Daily said, citing Huang Jiefu, head of the China Organ Donation Committee and a former vice health minister.

The World Health Organization on Friday confirmed that a new case of the deadly Ebola virus has surfaced in Liberia, which was declared Ebola free in September.

"There is one confirmed case," WHO spokesman Tarik Jasarevic told Agence France Presse, without providing further details.

Bindu Ghimire's chemotherapy appointment is approaching, but supplies of the drugs the 61-year-old desperately needs are in short supply as a political crisis in her native Nepal deepens.

Protests at the border with India have already led to crippling fuel shortages in the landlocked Himalayan nation, and now medical supplies are also running short.

Medicine's final line of defense against deadly disease has been breached, raising the specter of a global epidemic, scientists say, after finding bacteria resistant to last-resort antibiotics.

The discovery could herald a virtual return to the Dark Ages, with doctors unable to control common germs like E. Coli, rolling back centuries of medical progress.

Indonesia's health ministry has apologized after a printing error led to posters being put up claiming that HIV can be transmitted through mosquito bites, swimming and sneezing, an official said Wednesday.

Social media was flooded with angry comments after the ministry's attempt to launch a campaign to debunk myths about HIV backfired badly in a country where people with the virus are much stigmatized.

Antibiotic resistance, which can turn common ailments into killers, has reached dangerous levels worldwide, the World Health Organization warned Monday, saying users still know too little about how antibiotics work.

Antibiotic resistance happens when bugs become immune to existing drugs, allowing minor injuries and common infections to become deadly.

With saturation media coverage of the Paris attacks, parents are asking themselves if they should talk to their children about the killings -- and how they should go about it.

Most child psychology experts believe that children should be told, but warn that parents have to be careful not to allow them to be overwhelmed by fear or horror at what happened.

It's a disturbing scene: a Brazilian rape victim arrives at the hospital seeking an abortion, but first she must prove she was raped and undergo invasive questioning.

That is the proposal contained in a bill introduced by the controversial speaker of Brazil's lower house, Eduardo Cunha, that has sparked protests by outraged women across the country.