Category: Covid-19

“Greatness in Science Often Comes From the Well-Prepared Mind Turning a Chance Observation Into a Major Discovery”

(p. 27) Takuo Aoyagi, a Japanese engineer whose pioneering work in the 1970s led to the modern pulse oximeter, a lifesaving device that clips on a finger and shows the level of oxygen in the blood and that has become a critical tool in the fight against the novel coronavirus, died on April 18 [2020] in Tokyo.

. . .

Mr. Aoyagi’s contribution to medical science was built on decades of innovation and invention. In an essay about Mr. Aoyagi, John W. Severinghaus, a professor emeritus of anesthesia at the University of California, San Francisco, wrote in 2007 that Mr. Aoyagi’s “dream” had been to detect oxygen saturation levels without having to draw blood.

. . .

But he soon ran into a problem. Blood does not flow smoothly like an open tap, but pulses through the body irregularly, thus preventing an accurate recording of dye levels. The problem, however, turned out to be an opportunity. By devising a mathematical formula to correct for this “pulsatile noise,” he created a device that measured oxygen levels with greater accuracy than before.

“Greatness in science, often, as here, comes from the well-prepared mind turning a chance observation into a major discovery,” Dr. Severinghaus wrote.

For the full obituary, see:

John Schwartz and Hikari Hida. “Takuo Aoyagi, 84; Invented Medical Device.” The New York Times, First Section (Sunday, May 3, 2020): 27.

(Note: ellipses, and bracketed year, added.)

(Note: the online version of the obituary was updated June 20, 2020, and has the title “Takuo Aoyagi, an Inventor of the Pulse Oximeter, Dies at 84.”)

The essay about Aoyagi mentioned above is:

Severinghaus, John W. “Takuo Aoyagi: Discovery of Pulse Oximetry.” Anesthesia & Analgesia 105, no. 6 (Dec. 2007): S1-S6.

Least-Well-Off Were Gaining Before Pandemic

(p. A3) U.S. families’ income and wealth rose in the years heading into the coronavirus pandemic, with those in lower-income and lower-wealth categories reaping relatively large gains, the Federal Reserve said in a report on household finances.

. . .

The distribution of wealth between low- and high-income households narrowed slightly in the latest survey period, Fed economists said, a shift from the 2010-to-2016 period when incomes largely stagnated for all but the most well-off after the 2007-2009 recession.

Families in the lowest two income groups recorded large percentage increases in median net worth, suggesting the decadelong expansion benefited a wide swath of society. Net worth rose 37% to $9,800 for the lowest earners, and increased 40% to $44,000 for the second-lowest group. The median net worth of the highest and second-highest groups declined 8% and 9%, respectively.

For the full story, see:

Harriet Torry. “Household Wealth Rose Before Crisis.” The Wall Street Journal (Tuesday, September 29, 2020): A3.

(Note: ellipsis added.)

(Note: the online version of the story was updated Sep. 28, 2020, and has the title “Household Wealth Rose in Years Before Pandemic, Fed Says.”)

“You Can’t Wait for Somebody to Make a Giant Study”

(p. A6) In April [2020], researchers published an article in the Journal of the American Medical Association suggesting many Covid-19 patients with respiratory distress might require a different treatment approach than typically used for ARDS.

. . .

Maurizio Cereda, an anesthesiologist and head of the surgical ICU at the Hospital of the University of Pennsylvania, said doctors normally use standardized tables to match the level of oxygen in the blood with the amount of PEEP needed. Penn tends to use a table with lower PEEP values, he said, but even those lower levels seem to damage the lungs of some of his Covid-19 patients. As a result, he disregards the table entirely at times, he said, even though some in his institution disagree with his approach.

“You can’t wait for somebody to make a giant study,” Dr. Cereda said. “You are alone with your clinical observation. A lot of people don’t feel comfortable with that because they want to have big guidelines. People seem to be afraid they’re going to do something wrong.”

. . .

At Maimonides Medical Center in Brooklyn, critical-care and emergency-medicine doctor Cameron Kyle-Sidell said he was initially seeing much higher mortality rates from Covid19 patients on ventilators than he would have expected from classic ARDS, possibly because physicians were sticking to PEEP levels used to treat traditional ARDS.

“There are people who are treating this the way they would have treated any other ARDS,” he said. “Then there’re people on the flip side—and I am on that flip side—that think you should treat it as a different disease than we treated in the past.”

For the full story, see:

Sarah Toy and Mark Maremont. “Doctors Split on Best Way To Treat Coronavirus Cases.” The Wall Street Journal (Thursday, July 2, 2020): A6.

(Note: ellipses, and bracketed year, added.)

(Note: the online version of the story has the date July 1, 2020, and has the title “Months Into Coronavirus Pandemic, ICU Doctors Are Split on Best Treatment.” The online version quoted above includes a couple of added sentences quoting Dr. Cereda, beyond the single sentence quoted in the print version.)

Natural Experiments Are Equal to Randomized Double-Blind Clinical Trials in Showing Causality

(p. B6) . . . randomized controlled trials are the gold standard in medicine. Using randomization (by, say, flipping a coin to assign patients to a new treatment or not) is the best way to determine whether treatments work.

Unfortunately, randomized trials take time — which is a problem when doctors need answers now. So doctors and public health officials have been turning to available real-world data on patient outcomes and trying to make sense of them.

. . .

“Large-scale randomized evaluations have been less common in economics, prioritizing the need for economists to identify often creative but sometimes narrow natural experiments to estimate the causal effects of treatments,” said Amitabh Chandra, an economist at the Harvard Business School and the Kennedy School of Government.

Ashish Jha, recently appointed the dean of the Brown University School of Public Health, said that while “natural experiments have causal interpretations, typical associational studies in medicine do not, which may make some medical researchers less comfortable interpreting the results.”

. . .   Most doctors can relate to recent comments by the Food and Drug Administration director Stephen Hahn in last week’s congressional pandemic hearing. “In a rapidly moving situation like we have now with Covid-19,” he said, decisions are made “based on the data that’s available to us at the time.”

For the full commentary, see:

Anupam B. Jena and Christopher M. Worsham. “THE UPSHOT; What Coronavirus Researchers Can Learn From Economists.” The New York Times (Thursday, July 2, 2020): B6.

(Note: ellipses added.)

(Note: the online version of the commentary has the date June 30, 2020, and has the same title as the print version.)

Litan and Mankiw Endorse Paying People to Take Vaccine

(p. 5) What’s the best way to get the economy back on track after the Covid-19 recession? Simple: Achieve herd immunity. And what’s the best way to achieve herd immunity? Again, simple: Once a vaccine is approved, pay people to take it.

That bold proposal comes from Robert Litan, an economist at the Brookings Institution. Congress should enact it as quickly as possible.

. . .

Recent research by the University of Chicago economists Austan Goolsbee and Chad Syverson has found that the government-mandated shutdowns account for just a small part of the decline in economic activity. The main reason people aren’t spending is that they are afraid to leave their homes and contract the virus. That hypothesis explains my own behavior. I have not stepped foot on an airplane or inside a restaurant for six months.

. . .

Immunology, meet economics. One of the first principles of economics — perhaps the most important — is that people respond to incentives. Applying this principle to the case at hand, Mr. Litan recommends that the government pay $1,000 to whoever gets the vaccine. With a large enough incentive, most Americans are likely to get vaccinated.

This proposal is textbook economics. (I’ve written some of the textbooks.) As all economics students learn, when an activity has a side effect on bystanders, that effect is called an externality. In the presence of externalities, the famous theorems of economics that justify laissez-faire do not apply. Adam Smith’s vaunted invisible hand can no longer work its magic.

A classic example of a negative externality is pollution, and the simplest and least invasive policy solution is a tax on emissions. In economics-speak, such a tax internalizes the externality: It induces polluters to take the cost of pollution into account by giving them a financial incentive to cut emissions. That’s why I have written here many times that a tax on carbon emissions is the best way to deal with global climate change.

Vaccination confers a positive externality. When you get vaccinated, you benefit not only yourself but also your fellow citizens by helping society take a step toward herd immunity. In this case, internalizing the externality requires not a tax but a subsidy, as Mr. Litan suggests.

For the full commentary, see:

N. Gregory Mankiw. “A Vaccine Subsidy Licks 2 Crises With One Shot.” The New York Times, SundayReview Section (Sunday, September 13, 2020): 5.

(Note: ellipses added.)

(Note: the online version of the commentary has the date Sept. 9, 2020, and has the title “Pay People to Get Vaccinated.”)

The Robert Litan op-ed mentioned above is:

Litan, Robert E. “Want Herd Immunity? Pay People to Take the Vaccine.” Brookings Institute Op-Ed. (Tues., Aug. 18, 2020) URL: https://www.brookings.edu/opinions/want-herd-immunity-pay-people-to-take-the-vaccine/.>

The Goolsbee and Syverson NBER working paper mentioned above is:

Goolsbee, Austan, and Chad Syverson. “Fear, Lockdown, and Diversion: Comparing Drivers of Pandemic Economic Decline 2020.” NBER Working Paper #27432, June 2020.

“Operation Warp Speed, . . . , Is More Imaginative Than the Bureaucratic Norm”

(p. 11) . . . the blundering of the Trump administration, while real and deadly, may not be responsible for the bulk of America’s coronavirus fatalities.

. . .

. . . : the absence of challenge trials for vaccines (in which young, healthy participants agree to be vaccinated and then infected with the virus), the predictable expert resistance to at-home testing. But the most important one was the straightforward bureaucratic calamity at the C.D.C. that delayed effective testing for a fateful month.

An effective president might have addressed some of these problems. (Although Operation Warp Speed, the White House’s vaccine initiative, is more imaginative than the bureaucratic norm.) But overall they are problems with structures and habits rather than personalities — an institutional decadence that predated Trump and will persist when he is gone.

. . .

. . . the third thing you see when you look beyond Trump [is] the fact that so many countries in Western Europe, to say nothing of our neighbors in the Americas, have had death rates similar to ours.

This reality speaks not of exceptionalism but of convergence — and the possibility that the trends of the early 21st century have left us sharing more in common not only with France and Spain but also with Mexico and Brazil than most Americans might expect.

This, too, may matter long after Trump is gone. Where there are crises, in this dispensation, they are likely to be general rather than just American. Where there is decadence, it is the shared experience of late modernity. And if renewal comes to an exhausted West, it will not necessarily come through America alone.

For the full commentary, see:

Ross Douthat. “What Isn’t Trump’s Fault.” The New York Times, SundayReview Section (Sunday, September 13, 2020): 11.

(Note: ellipses added.)

(Note: the online version of the commentary has the date Sept. 12, 2020, and has the same title as the print version.)

Open Offices Reduce Productivity and Spread Diseases

(p. B4) When historians of the early 21st century look back on the pre-Covid era, one of the absurdities they might highlight is the vogue for gigantic, open-plan offices. The apotheosis of this trend of breaking down barriers between co-workers must surely be Facebook Inc.’s 433,555-square-foot Frank Gehry-designed open-plan office at its headquarters in Menlo Park, Calif. Opened in 2015, it’s now a ghost town, a monument to offices vacated by the pandemic.

Cramming cavernous spaces with as many desks as they could hold might have increased serendipitous interactions, but it almost certainly reduced productivity and helped spread communicable diseases, including coronavirus.

. . .

Cue the “dynamic workplace,” a pivot away from the open plan, built on the idea that with fewer employees coming to work on any given day, offices can offer them more flexibility of layout and management.

While open offices and dynamic workplaces share similar components—privacy booths and huddle rooms to escape the hubbub, cafe-like networking spaces, etc.—they’re philosophically distinct. One is intended to be a place where people come (at least) five days a week, and get most of their work done on site. The other is planned for people rotating in and out of the office, on flexible schedules they have more control over than ever.

. . .

Research on hot-desking in office spaces, for example—where employees give up a dedicated space in favor of first-come-first-serve seating—finds that it decreases socialization and trust. This happens because employees figure they might never again see the person they sit next to on a given day, says Dr. Sander. In other studies, employees complain they can’t find their colleagues, that it’s a hassle to find a new spot to work every day, and that such arrangements ignore humans’ innate territoriality and desire to make a space their own.

For the full commentary, see:

Christopher Mims. “Goodbye, Open Office. Hello, ‘Dynamic Workplace.” The Wall Street Journal (Saturday, September 12, 2020): B4.

(Note: ellipses added.)

(Note: the online version of the commentary has the same date and title as the print version.)

Whole Live Covid-19 Virus, Not Just Fragments, Found in Hospital Aerosols

(p. A4) Skeptics of the notion that the coronavirus spreads through the air — including many expert advisers to the World Health Organization — have held out for one missing piece of evidence: proof that floating respiratory droplets called aerosols contain live virus, and not just fragments of genetic material.

Now a team of virologists and aerosol scientists has produced exactly that: confirmation of infectious virus in the air.

“This is what people have been clamoring for,” said Linsey Marr, an expert in airborne spread of viruses who was not involved in the work. “It’s unambiguous evidence that there is infectious virus in aerosols.”

For the full story, see:

Apoorva Mandavilli. “Scientists Find Respiratory Droplets in Hospital Air.” The New York Times (Wednesday, August 12, 2020): A4.

(Note: ellipsis, and bracketed date, added. The online version say that the New York print version had the title “Scientists Retrieve Live Virus From Hospital Air.” My National print version had the title “Scientists Find Respiratory Droplets in Hospital Air.”)

(Note: the online version of the story has the date Aug. 11, 2020, and has the title “‘A Smoking Gun’: Infectious Coronavirus Retrieved From Hospital Air.”)

Former FDA Commissioners Urge Early “Emergency Use Authorization” for Covid-19 Vaccine

(p. A17) As former FDA commissioners, we are confident in the FDA’s career scientists to oversee vaccine development rigorously.

If a Covid vaccine clears this process, it could be made available initially to specific groups of people through an Emergency Use Authorization. This emergency authority enables the FDA to make products available before a full application is approved by the agency. Congress created the emergency-use pathway as part of the Project BioShield Act of 2004, which provided for the development of medical countermeasures against chemical, biological, radiological and nuclear threats. Following 9/11 and anthrax, lawmakers expected an urgent need for such defenses.

After the 2009 swine flu, Congress expanded this pathway in the Pandemic and All-Hazards Preparedness Reauthorization Act of 2013, a bipartisan measure aimed at preparing the country to weather a pandemic. The law streamlined the application process for emergency use, expanded the classes of drugs eligible, and broadened the testing the FDA could require.

. . .

This authority enables the staged entry of a vaccine. It’s unlikely that a Covid-19 vaccine will receive full approval and broad distribution right away. Instead, the FDA will probably authorize vaccines for use in targeted groups of people at high risk from Covid and most likely to benefit from the vaccine. For them, it may make sense to provide access to the vaccine before long-term follow-up studies that address very remote risks.

This might include health-care providers or first responders, who face greater exposure, or older people, who are more prone to severe complications if infected.

. . .

This process exists precisely to deal with public-health emergencies like Covid-19. It isn’t a lower standard for FDA approval. It’s a more tailored, flexible standard that helps protect those who need it most while developing the evidence needed to make the public confident about getting a Covid-19 vaccine.

For the full commentary, see:

Mark McClellan, and Scott Gottlieb. “How ‘Emergency Use’ Can Help Roll Out a Covid Vaccine.” The Wall Street Journal (Monday, September 15, 2020): A17.

(Note: ellipses added.)

(Note: the online version of the commentary has the date Sep. 13, 2020, and has the same title as the print version.)

Russia Approves Covid-19 Vaccine Before Completing Phase 3 Clinical Trial

(p. A6) MOSCOW — Russia has become the first country in the world to approve a vaccine for the coronavirus, President Vladimir V. Putin announced on Tuesday, though global health authorities say the vaccine has yet to complete critical, late-stage clinical trials to determine its safety and effectiveness.

Mr. Putin, who told a cabinet meeting on Tuesday [Aug. 11, 2020] morning that the vaccine “works effectively enough,” said that his own daughter had taken it. And in a congratulatory note to the nation, he thanked the scientists who developed the vaccine for “this first, very important step for our country, and generally for the whole world.”

. . .

If Russian scientists have taken an unorthodox route to the coronavirus vaccine, it would not be the first time. Back in the 1950s, a team of researchers tested a promising, and ultimately successful, polio vaccine on their own children.

For the full story, see:

Andrew E. Kramer. “Putin Says Russia Is First to Approve Vaccine, but Skepticism Abounds.” The New York Times (Wednesday, August 12, 2020): A6.

(Note: ellipsis, and bracketed date, added.)

(Note: the online version of the story was updated Aug. 11, 2020, and has the title “Russia Approves Coronavirus Vaccine Before Completing Tests.”)

Shanghai Immunologist Says Phase 1 and Phase 2 Tests Show Chinese Vaccine Is Safe and “Highly Likely” to Protect Against Covid-19

(p. A8) The United Arab Emirates has become the first country outside China to approve emergency usage of a Chinese Covid-19 vaccine candidate, in a vote of confidence for a state-backed drugmaker racing global rivals to stop the spread of the coronavirus.

. . .

Tao Lina, a former immunologist with the Shanghai CDC, said in an interview that it makes sense for authorities to approve the usage of Chinese vaccines that have proved safe during the first two phases of clinical trials, given the scale of the Covid-19 crisis. Unlike medical drug treatments, vaccines work by triggering a person’s own immunity, he said. “I’m not at all worried about the safety of the vaccines,” Mr. Tao said.

While the level of efficacy of the Chinese vaccines being used including those of Sinopharm isn’t yet clear, Mr. Tao said the Chinese vaccines’ ability to induce the body to produce antibodies during previous clinical trials meant that they were highly likely to confer some degree of protection from the virus.

For the full story, see:

Chao Deng, and Rory Jones. “U.A.E. Approves Use of China-Made Covid-19 Vaccine.” The Wall Street Journal (Wednesday, September 16, 2020): A8.

(Note: ellipsis added.)

(Note: the online version of the story was updated Sep. 15, 2020, and has the title “In Global Covid-19 Vaccine Race, Chinese Shot Receives First Foreign Approval.”)