Pfizer says an early peek at its vaccine data suggests the shots may be 90% effective at preventing COVID-19, indicating the company is on track later this month to file an emergency use application with U.S. regulators.
Medical researchers are raising significant doubts about whether an agent of the human immune system causes some coronavirus patients to end up in the hospital with injured lungs and other organs, struggling to breathe. What remains is a continuing mystery about what causes certain people to die from Covid-19, and how best to prevent that.
WASHINGTON (AP) — Despite Trump administration efforts to erect a protective shield around nursing homes, coronavirus cases are surging within facilities in states hard hit by the latest onslaught of COVID-19.
(Reuters) - Global coronavirus infections exceeded 50 million on Sunday, according to a Reuters tally, with a second wave of the virus in the past 30 days accounting for a quarter of the total.
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