CDC changes the guidelines they just issued, Scott Gottlieb admits there was no science behind the 6′ rule/AP

 CDC just issued new guidance for social distancing in schools.  It turns out that no data supported the 6′ rule, as I pointed out in several blog posts, such as here.  

UPDATE March 21:  Scott Gottlieb, former FDA Commissioner, admits the 6′ rule was never based on science.  Watch the CNBC clip.

This six-foot distancing requirement has probably been the single costliest mitigation tactic that we’ve employed in response to COVID… and it really wasn’t based on clear science… we should have readjucated this much earlier… We’ve subsequently learned that Covid is spreading through aerosols, not just droplets… it caused us to overestimate the impact of distancing, the 6 feet”

CDC simply pulled the 6′ rule out of the air.  From the AP:

“The Ridley school system in suburban Philadelphia took steps like that to abide by the 6-foot guideline. But neighboring communities went with 3 feet, “and we’re not seeing the data really reflect a different spread rate,” said Lee Ann Wentzel, district superintendent.

Even before the CDC acted, the district had decided to shift to 3-foot distancing next month. Wentzel said the change in CDC guidance will make it easier to explain and defend the decision.

A recent study in Massachusetts looked at students and staff members in schools that used the 3-foot standard and those that had the 6-foot one. It found no significant difference in infection rates.

Massetti said other research has also been influential, including two studies the CDC released Friday. One out of Utah found low coronavirus transmission rates among students who did a good job wearing masks and whose desks were only 3 feet apart. The other study, done in Missouri, pointed to a similar conclusion.

“In recent months, schools in some states have been disregarding the CDC guidelines, using 3 feet as their standard. Studies of what happened in some of them helped sway the agency, said Greta Massetti, who leads the CDC’s community interventions task force.

“We don’t really have the evidence that 6 feet is required in order to maintain low spread,” she said. Also, younger children are less likely to get seriously ill from the coronavirus and don’t seem to spread it as much as adults do, and “that allows us that confidence that that 3 feet of physical distance is safe.”

The new guidelines:

— “Removes recommendations for plastic shields or other barriers between desks. “We don’t have a lot of evidence of their effectiveness” in preventing transmission, Massetti said.

— Advises at least 3 feet of space between desks in elementary schools, even in towns and cities where community spread is high, so long as students and teachers wear masks and take other precautions.

— Says spacing can also be 3 feet in middle and high schools, so long as there is not a high level of spread in the community. If there is, the distance should be at least 6 feet.

The CDC said 6 feet should still be maintained in common areas, such as school lobbies, and when masks can’t be worn, such as when eating.

Also, students should be kept 6 feet apart in situations where there are a lot of people talking, cheering or singing, all of which can expel droplets containing the coronavirus. That includes chorus practice, assemblies and sports events.

Teachers and other adults should continue to stay 6 feet from one another and from students, the CDC said.

The CDC’s 6-foot advice for schools, issued last year, was the same standard applied to workplaces and other settings. In contrast, the World Health Organization suggested 1 meter — a little over 3 feet — was sufficient in schools. The American Academy of Pediatrics says desks should be 3 feet apart and “ideally” 6 feet.”

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