Amid the chaos of the pandemic’s early days, doctors who faced the first coronavirus onslaught reached across oceans and language barriers in an unprecedented effort to advise colleagues trying to save lives in the dark.  With no playbook to follow and no time to wait for research,...

As a New York University medical researcher who works once a week in an emergency room, Dr. David Lee had the luxury of time to think like a scientist while also treating coronavirus patients whose lungs kept giving out. In every case, he saw the same thing: Their blood was starved of oxygen....

When Amir Hussein was finally allowed to leave the horrific migrant camp of Moria on the Greek island of Lesbos, it was supposed to be the end of a year-long odyssey. "After (experiencing) hell in Moria, we had not expected to find ourselves on the street in Athens," says the 14-year-old...

In Brazil, health care workers are on the front line of the coronavirus pandemic in more ways than one, treating patients but also volunteering to test some of the most promising experimental vaccines. Brazil is the country with the second-highest number of infections and deaths in the...