The U.S. Centers for Disease Control and Prevention (CDC) on March 3 said some 93 percent of the U.S. population live in locations where COVID-19 levels are low enough that people do not need to wear masks indoors.

Antibodies induced by mRNA COVID-19 vaccines keep improving in quality for at least six months while the immune system continues to “train” its antibody-producing B cells, according to a new study. In other research, dysfunctional red blood cells contribute to the blood vessel injuries common in severe COVID-19, according to laboratory studies that also may suggest a way to treat the problem.

Officials in New Jersey, Connecticut, Delaware, California and Oregon said on Feb. 7 they will lift indoor mask mandates for schools and other public places in coming weeks, seeking a return to “normalcy” as soaring COVID-19 infections fueled by the Omicron variant abate.

The U.S. government will make 400 million non-surgical N95 masks from its strategic national stockpile available for free to the public starting next week, a White House official said, marking the Biden administration’s latest effort to help curb the COVID-19 pandemic.

The U.S. Centers for Disease Control and Prevention (CDC) has said Americans should wear the most protective mask they can, but stopped short of recommending an N95 or similar face covering.

President Joe Biden on January 13 said he will deploy more military health workers to six U.S. states beginning next week, and give Americans free masks and more free tests to tackle the fast-spreading Omicron variant around the country.

Researchers at the National Autonomous University of Mexico (UNAM) created a facemask using silver and copper nanolayers that neutralizes SARS-CoV-2, the virus that causes Covid-19, the university’s official gazette said on Aug. 26.

The U.S. Centers for Disease Control and Prevention on July 9 updated its guidance to help reopen schools in the fall, including recommending masking indoors for everyone who is not fully vaccinated and three feet of distance within classrooms.

Fully vaccinated visitors to Walt Disney Co.’s U.S. theme parks will not be required to wear face masks in most areas starting on June 15, the company said, as the country’s Covid-19 cases continue to decline.

The U.S. Centers for Disease Control and Prevention (CDC) on May 13 advised that fully vaccinated people do not need to wear masks outdoors and can avoid wearing them indoors in most places, updated guidance the agency said will allow life to begin to return to normal.