Vaccinated Americans May Go Without Masks in Most Places, Federal Officials Say

John Moore, a virologist at Weill Cornell Medicine in New York, said people would need to assess their own comfort in different situations, depending on the size of the gathering and the number of cases in the area.“Would I go...

Pfizer and Moderna Shots Are Powerfully Effective against Virus, Analysis Says

The Pfizer-BioNTech and Moderna coronavirus vaccines are 94 percent effective at preventing symptomatic Covid-19 illness, according to a new study of more than 1,800 health care workers in the United States.The research, which the Centers for Disease Control and Prevention...

Pfizer and Moderna vaccines are powerfully effective against the virus, a C.D.C. analysis confirmed.

The Pfizer-BioNTech and Moderna coronavirus vaccines are 94 percent effective at preventing symptomatic Covid-19 illness, according to a new study of more than 1,800 health care workers in the United States.The research, which the Centers for Disease Control and Prevention...

How the United States Beat the Variants, for Now

On Dec. 29, a National Guardsman in Colorado became the first known case in the United States of a contagious new variant of the coronavirus.The news was unsettling. The variant, called B.1.1.7, had roiled Britain, was beginning to surge in...

Businesses Offer Perks to Vaccinated Customers

At Fort Bragg, soldiers who have gotten their coronavirus vaccines can go to a gym where no masks are required, with no limits on who can work out together. Treadmills are on and zipping, unlike those in 13 other gyms...

Hundreds of Epidemiologists Expected Mask-Wearing in Public for at Least a Year

When federal health officials said on Thursday that fully vaccinated Americans no longer needed to wear masks in most places, it came as a surprise to many people in public health. It also was a stark contrast with the views...

In Survey, Epidemiologists Saw Continued Need for Masks

When federal health officials said on Thursday that fully vaccinated Americans no longer needed to wear masks in most places, it came as a surprise to many people in public health. It also was a stark contrast with the views...

Vaccinated Americans Now May Go Without Masks in Most Places, the C.D.C. said

In a sharp turnabout, federal health officials on Thursday advised that Americans who are fully vaccinated against the coronavirus may stop wearing masks or maintaining social distance in most indoor and outdoor settings, regardless of size.The advice from the Centers...

More Scientists Urge Broad Inquiry Into Coronavirus Origins

A group of 18 scientists stated Thursday in a letter published in the journal Science that there is not enough evidence to decide whether a natural origin or an accidental laboratory leak caused the Covid-19 pandemic.They argued, as the U.S....

Covid Pandemic Demands Air Quality Changes in the Workplace, Researchers Say

Clean water in 1842, food safety in 1906, a ban on lead-based paint in 1971. These sweeping public health reforms transformed not just our environment but expectations for what governments can do.Now it’s time to do the same for indoor...
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