Five months into the pandemic, the U.S. still hasn’t solved the problem. The dearth of supplies is affecting a broad array of health facilities, renewing pleas for White House intervention.

We answer some of the big questions about vaccines and how long one for coronavirus could take.

Dr. Daniel R. Lucey wants answers to pointed questions that bear on how the coronavirus leapt from bats to humans.

Amid a push to reopen schools, a Trump administration directive would require in-person classes.

Seventy members of staff from Hillingdon Hospital in west London are self-isolating.

Researchers looked at three underlying mechanisms leading to a cardiac event to see whether they were different during the different seasons.

Health experts widely condemned the departure, which brings an end to threats President Trump had been making for months.

The government’s Joint Biosecurity Centre is to take a bigger role in co-ordinating the response.

There must be no shortages in protective gear if the UK faces a second wave of coronavirus, say MPs.

The World Health Organization plans to update its advice after hundreds of experts urged the agency to reconsider the risk of aerosol transmission.

An agreement for the weedkiller’s maker to pay more than $10 billion to end litigation may not get court approval.

Young people are more likely to pack their bags — often for fear of infection — than other age groups, a Pew Research Center survey finds.

A study appears to support the hypothesis that a diet rich in animal products and fatty and sugary food is associated with the presence of acne in adulthood.

Over time, taking daily pills for HIV can be a burden, but there is hope that soon there will be a drug that patients will only need to take every six months.

Winter, flu season and a once-in-a-century pandemic are three crucial reasons to try to boost your immune system.

A drug injected every two months is more effective at preventing H.I.V. infection than a daily pill, scientists report.

Brazilian scientists say the man no longer shows signs of the infection after taking a powerful drug cocktail. But the preliminary results require confirmation.

Confronted by illnesses that most scientists overlook, these families had to work out their own approaches to find treatments.

It’s estimated that inactivity was responsible for up to 10% of major chronic non-communicable diseases and 9% of early deaths worldwide back in 2008.

Dr. Anthony Fauci said the country was “knee-deep in the first wave.” The U.S. will pay a company $1.6 billion for vaccine development. Brazil’s president had Covid-19 symptoms.

A survey by the Office for National Statistics looked at who had been infected in the community in England.