The first new Alzheimer's treatment in more than 20 years was hailed as a breakthrough when regulators approved it more than four months ago, but its rollout has been slowed by questions about its price and how well it works.

Several major medical centers remain undecided on whether to use Biogen's Aduhelm, which is recommended for early stages of the disease. Big names like the Cleveland Clinic and Mass General Brigham in Boston say they'll pass on it for now.

Almost overnight, Japan has become a stunning, and somewhat mysterious, coronavirus success story.

Daily new COVID-19 cases have plummeted from a mid-August peak of nearly 6,000 in Tokyo, with caseloads in the densely populated capital now routinely below 100, an 11-month low.

The Grand Mosque in the Muslim holy city of Mecca in Saudi Arabia operated at full capacity Sunday, with worshippers praying shoulder-to-shoulder for the first time since the coronavirus pandemic began.

Protests erupted in Italy as one of the most stringent anti-coronavirus measures in Europe went into effect Friday, requiring all workers, from magistrates to maids, to show a health pass to get into their place of employment.

Police were out in force, schools planned to end classes early and embassies issued warnings of possible violence amid concerns that the anti-vaccination demonstrations could turn violent, as they did in Rome last weekend.

The Biden administration says the United States will reopen its land borders for nonessential travel next month, ending a 19-month freeze due to the COVID-19 pandemic.

New rules to be announced Wednesday will allow fully vaccinated foreign nationals entry to the U.S. regardless of the reason for travel.

Drugmaker Merck asked U.S. regulators Monday to authorize its pill against COVID-19 in what would add an entirely new and easy-to-use weapon to the world's arsenal against the pandemic.

If cleared by the Food and Drug Administration — a decision that could come in a matter of weeks — it would be the first pill shown to treat COVID-19. All other FDA-backed treatments against the disease require an IV or injection.

U.S. pharmaceutical giant Moderna announced Thursday it would build a plant in Africa, as pressure mounts on drugmakers to help ramp up Covid-19 vaccine production in areas that have received fewer doses.

The World Health Organization on Wednesday endorsed the world's first malaria vaccine and said it should be given to children across Africa in the hope that it will spur stalled efforts to curb the spread of the parasitic disease.

WHO Director-General Tedros Adhanom Ghebreyesus called it "a historic moment" after a meeting in which two of the U.N. health agency's expert advisory groups recommended the step.

Rebel-held northwest Syria is facing an unprecedented coronavirus surge and aid agencies are calling on the world to help provide humanitarian and medical aid, increase hospital capacity and ensure people are vaccinated.

The surge apparently caused by the more contagious delta variant has overwhelmed hospitals with sick patients and is causing shortages of oxygen, according to local officials. The local rebel-run authority imposed a nighttime curfew as of Tuesday while schools and universities were closed and students are getting distant learning.

AUB President Fadlo Khuri has expressed his pride in Professor Ardem Patapoutian, who was awarded this year’s Nobel Prize in physiology or medicine, through a congratulatory letter in which he expressed that the AUB community is doubly pleased as Patapoutian is not only Lebanese, but also a former student at the American University of Beirut.

Patapoutian, professor of neuroscience at Scripps Research institute in California, an American University of Beirut (AUB) alumnus and former student, has been awarded this year’s Nobel Prize in physiology or medicine. The Nobel Committee in Stockholm announced Monday that Patapoutian and his fellow molecular biologist David Julius have been awarded for their discoveries of receptors for temperature and touch. Patapoutian is the first AUB alumnus to win a Nobel Prize.