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Open smart, redux

Open smart, I and other economists argued back in March. Don't just shut lock down the whole economy willy-nilly. An auto-body paint shop (they wear masks and respirators anyway) is not likely to spread covid-19. Parks too. Test widely, randomly, to stop the spread of the disease, not just to diagnose the sick. 

At last, perhaps, we may be headed this way, reports the Wall Street Journal 

Scientists are settling on a road map that can help critical sectors of the economy safely conduct business, from meatpacking plants to financial services, despite the pandemic’s continued spread.

After nearly a year of study, the lessons include: Mask-wearing, worker pods and good air flow are much more important than surface cleaning, temperature checks and plexiglass barriers in places like offices and restaurants. And more public-health experts now advocate wide use of cheap, rapid tests to detect cases quickly, in part because many scientists now think more than 50% of infections are transmitted by people without symptoms.

We have a long way to go before vaccines stop the spread of the disease. Tests could do it now, if the FDA would get out of the way. Yet

 a year later, sufficient testing remains a critical issue.

Test detail

One of the largest studies of asymptomatic transmission to date showed that frequent testing was essential in identifying infections among a group of nearly 2,000 Marine recruits...

The study looked at cases identified with lab-based tests that search out and amplify the genetic material of the virus, but those tests aren’t as easily scaled as so-called rapid antigen tests, which search for viral proteins.

Results from lab-based tests can sometimes take days, while results from rapid tests are usually available in less than an hour...

The shift toward using frequent, inexpensive and rapid tests on the same people multiple times a week to screen entire populations—instead of one-time tests on individuals who have symptoms—will be important to efficiently break transmission chains, epidemiologists said.

“Unless we’re doing really broad, frequent screening of the people at large, we’re completely missing the vast majority” of infections, said Michael Mina, an assistant professor of epidemiology at the Harvard T.H. Chan School of Public Health. “We have to change how we’re doing this.”

I'm sure Paul Romer is saying, great, now the scientists finally get it. Well, they do. Next the FDA. 

Ventilation

Indoor ventilation has been on my mind. Why is outdoor dining safe and indoor not? Is it really safe to dine "outdoors" in a plastic tent, as has become the hilarious practice around where I live? If outdoors is safe, but indoors is warm, can we not make indoors as safe as outdoors with ventilation, HEPA filters, and UV light? 

Fresh air and effective filters indoors are important because they can remove virus particles before they have time to infect.

So this is a non-grumpy post. We have a long way to go with covid, and the next one after that. To see some durable wisdom breaking out is refreshing. 

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