vaccine

White House health advisor Dr. Anthony Fauci said he worries about the “durability” of a potential coronavirus vaccine, saying there’s a chance it may not provide long-term immunity. If Covid-19 acts like other coronaviruses, “it likely isn’t going to be a long duration of immunity,” Fauci, director of the National Institute of Allergy and Infectious Diseases, said during an interview...

The global race for a COVID-19 vaccine boils down to some critical questions about how much to rev up people’s immune systems — and whether revving it the wrong way could cause harm

More than 41 million Americans have filed for unemployment since the start of the coronavirus pandemic two months ago, the Labor Department reported Thursday.

The United States leads the world in both coronavirus cases and fatalities. And on Wednesday, it reached another grim milestone as the nationwide death toll surpassed 100,000, according to NBC News’ tally.

The United States reached another grim milestone Wednesday as the nationwide deaths from the coronavirus surpassed 100,000, according to NBC News’ tally. There are nearly 1.7 million confirmed cases.

A Seattle man who is taking part in a COVID-19 vaccine trial is opening up about experiencing an adverse reaction that briefly left him unconscious. Ian Haydon, 29, said volunteering was the right thing to do when he shared his story with TODAY last month after receiving the first dose of the vaccine candidate. The adverse reaction came after the second...

Only about half of Americans say they would get a COVID-19 vaccine if the scientists working furiously to create one succeed

A U.S. biotechnology company has begun injecting a coronavirus vaccine candidate into people in Australia with hopes of releasing a proven vaccine this year

This Memorial Day was unlike any other. Although states have begun to ease their stay-at-home orders, many restrictions on public spaces and social gatherings remained in place for the unofficial start of summer.

As lockdowns ease across the United States, Americans are getting out of the house to celebrate the unofficial start of the summer. President Donald Trump himself marked Memorial Day weekend with a round of golf — his first in more than two months.

As lockdowns ease across the United States, millions of Americans are set to take tentative steps outdoors to celebrate Memorial Day. But public health officials are still concerned that if people congregate in crowds or engage in other risky behavior, the coronavirus could come roaring back.

As states continue to reopen after weeks-long shutdowns shuttered businesses, the number of unemployed Americans continues to rise. On Thursday, the Labor Department announced 2.4 million people sought jobless benefits last week, bringing the total to nearly 39 million in the past two months.

British researchers testing an experimental vaccine against the new coronavirus are moving into advanced studies and aim to immunize more than 10,000 people to determine if the shot works

New guidelines from the Centers for Disease Control and Prevention and research from one of the top universities in the country released Wednesday emphasize the importance of lockdowns in the battle against the coronavirus. However, all 50 states have already begun to ease their stay-at-home orders.

U.S. officials and scientists are hopeful a vaccine to prevent Covid-19 will be ready in the first half of 2021 — 12 to 18 months since Chinese scientists first identified the coronavirus and mapped its genetic sequence. It’s a record-breaking time frame for a process that normally takes about a decade for an effective and safe vaccine. The fastest-ever vaccine development,...

Drug maker AstraZeneca secured its first agreements Thursday for 400 million doses of a COVID-19 vaccine, bolstered by an investment from the U.S. vaccine agency.

As all 50 states ease their lockdowns against the coronavirus, public health officials in some states are being accused of bungling infection statistics or even deliberately using a little sleight of hand to make things look better than they are.

President Donald Trump on Monday said he is taking the malaria drug hydroxychloroquine to prevent symptoms should he get coronavirus. The drug has not yet been proven to be effective.

Former President Barack Obama slammed U.S. politicians for their handling of the coronavirus pandemic in a virtual commencement address for graduating high school seniors across the country on Saturday night.

President Donald Trump on Monday said he is taking hydroxychloroquine, a drug commonly used to treat malaria. There are no drugs or other therapeutics presently approved by the U.S. Food and Drug Administration (FDA) to prevent or treat COVID-19.