U.S. manufacturers are sharply increasing production of cheap, fast – but less accurate – Covid-19 tests, aiming for 100 million per month by year-end 2020 that will enable schools and workplaces to significantly expand testing.

Japan is making an aggressive move to grab enough coronavirus vaccine to inoculate the country’s population four times over, a push the government hopes will instill confidence that it can host a delayed Summer Olympics in 2021.

The U.S. Food and Drug Administration granted emergency use authorization to Yale School of Public Health’s saliva test to detect Covid-19, after a trial on National Basketball Association players and staff.

U.S. National Institutes of Health Director Dr. Francis Collins said he was optimistic that the Trump administration’s vaccine-acceleration program “Operation Warp Speed” will generate a safe and effective vaccine for COVID-19 by year end.

Canadian Prime Minister Justin Trudeau’s wife, Australia’s minister for home affairs and a Chelsea soccer player are among new cases of the coronavirus that has infected almost 135,000 people and killed more than 4,900 worldwide.

Asia reported hundreds of new coronavirus cases – including an American soldier stationed in South Korea – as the United States warned of a pandemic, the disease spread in Europe and Brazil confirmed Latin America’s first infection.

Dr. Ann McKee of Boston University studies the brains of deceased football players at the world’s largest brain bank, hoping to learn about the long-term impact of repeated head traumas for people ranging from professional athletes to victims of domestic abuse.

Federal authorities charged 10 former National Football League players for allegedly defrauding a healthcare program of more than $3.4 million by filing false claims for expensive medical equipment.

A study of more than a thousand former professional soccer players has uncovered significantly more deaths from brain disease than among non-players.

Although space travel exposes astronauts to forms of radiation that are uncommon on Earth, and that are linked to cancers and heart problems, a U.S. study suggests this does not significantly shorten their lives.