Explosives left behind by the Islamic State group in Iraq's Mosul took 12-year-old Abdallah's left leg, but another kind of terror may cost him his arm: antibiotic-resistant bacteria.

US regulators on Tuesday approved the sale of a new drug that could revolutionize the treatment of severe depression, giving new hope to sufferers who have not found an effective option.

Ethan Lindenberger spent his first 18 years unvaccinated -- defenseless against tetanus, polio, measles. But in December, defying his mother, he went and got inoculated, a rebellion that earned him an invitation to Congress.

"I grew up understanding my mother believed vaccines are dangerous, as she would speak openly about her views both online and in person," the high schooler said Tuesday in testimony before a Senate hearing on contagious disease outbreaks.

A second person is in sustained remission from HIV-1, the virus that causes AIDS, after ceasing treatment and is likely cured, researchers were set to announce at a medical conference Tuesday.

French authorities said Friday that there appeared to be no health risks behind the decision to halt production of Nutella at a plant in Normandy, the world's largest factory making the prized chocolate-and-hazelnut spread.

The rapid scale-up of the human papillomavirus (HPV) vaccine could virtually eliminate cervical cancer in a handful of rich countries within three decades, and in most other nations by century's end, researchers said Wednesday.

Fentanyl, a highly dangerous painkiller at the heart of the U.S. opioid epidemic, has been overprescribed by doctors, according to a report Tuesday that accused health authorities and manufacturers of being too lax in their oversight.   

The drug is a synthetic opioid up to 100 times more powerful than morphine and which is largely sold on the black market. 

Ukraine's capital has seen its first death from measles in a major outbreak, the health ministry said Monday.

A U.S. military hospital funded by the United Arab Emirates will be built in Abu Dhabi to treat Emirati soldiers and regionally based American troops, a U.S. army official said on Sunday.

Cypriot legislators on Friday voted to approve the cultivation and use of medical cannabis, joining a growing trend among other European Union nations.