The US Centers for Disease Control and Prevention calls for wearing masks in areas with high transmission of COVID-19, even for fully vaccinated people


US health authorities said on Tuesday that in areas where the coronavirus, especially delta variants, is spreading rapidly, Americans who have been vaccinated against COVID-19 should re-wear masks in indoor public places.

The Centers for Disease Control and Prevention (CDC) also recommends that all teachers and students from kindergarten to grade 12 wear masks at school, regardless of vaccination status. The Centers for Disease Control and Prevention stated that children should resume full-time, face-to-face learning in the fall and adopt appropriate preventive strategies.

These changes marked CDC May Announcement This prompted millions of vaccinated Americans to take off their masks.

Changes in infection patterns

The United States leads the world in the average number of new infections per day, accounting for one-ninth of the number of cases reported every day in the world.

The 7-day average of new cases has been rising sharply, reaching 57,126, which is still about a quarter of the peak of the pandemic.

The agency said: “In areas with high transmission and high transmission, CDC recommends that fully vaccinated people wear masks in public indoor environments to help prevent delta transmission and protect others.”

The CDC stated that 63% of the counties in the United States have a high transmission rate, and masks are required. This number came after the rise of the highly disseminated delta variant, and now there are more than 8 out of 10 cases nationwide.

In May, the agency recommended that fully vaccinated people do not need to wear masks outdoors, and in most places they can avoid wearing masks indoors. The agency stated that the guidance will allow life to begin to return to normal.

Dr. David Dudi, an epidemiologist at Johns Hopkins University, said that the CDC’s guidelines are driven by changes in infection patterns.

“We see that the number of cases doubles every 10 days or so,” he said.

Watch | When can I stop wearing a mask?

Doug Manuel, a senior scientist at the Ottawa Hospital, said that before the mask falls off, the level of transmission of COVID-19 in the community must be much lower-and this low number of cases may be until autumn Will happen. 0:55

‘Necessary precautions’

Randi Weingarten, president of the American Federation of Teachers, praised the new CDC mask guidelines in a statement, saying it is necessary to “respond to the changing reality of the spread of the virus.”

She called this a “necessary precaution before children under 12 can be vaccinated against COVID and more Americans over the age of 12 are vaccinated.”

The CDC’s new recommendations are non-binding, and many Americans, especially in states favored by the Republican Party, may choose not to follow these recommendations. At least eight states prohibit schools from requiring masks.

Dr. Isaac Wesfors, a medical epidemiologist and adjunct professor at Cornell University’s School of Public Health, said some people may develop resistance.

“I think we will get a counterattack because I think people might see it as a step backwards,” he said.

On Monday, the Biden administration confirmed that it will not remove any existing international travel restrictions, citing the increasing number of COVID-19 cases, and it is expected that these cases will continue to increase in the coming weeks.

Under the leadership of former President Donald Trump, masks have become a political issue in the United States, and he refused to make it mandatory.

President Joe Biden began wearing masks a few days after taking office and asked to wear masks in transportation hubs.



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