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Category: Science/mathematics

Fauci: Trump’s rapid recovery, while welcome, ‘amplifies’ public misunderstanding of Covid-19

Fauci: Trump’s rapid recovery, while welcome, ‘amplifies’ public misunderstanding of Covid-19

STAT reports: Health officials have struggled to convey the seriousness of Covid-19 to many Americans. President Trump’s rapid recovery from the disease, while welcome by all, makes the challenge even more difficult, Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases acknowledged. Trump’s quick bounce-back from his infection will likely underscore the mistaken belief some people have that the disease does not present significant health risks, Fauci said in an interview with STAT. “We’re all glad that…

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Could this era of social distancing hasten the demise of flu?

Could this era of social distancing hasten the demise of flu?

Zaria Gorvett writes: Back in January 2020, at the end of the Australian summer, the country had 6,962 cases of the flu confirmed via a laboratory test. At this time, Covid-19 was still known only as “the novel coronavirus” and mostly confined to China. Ordinarily, you would have expected to see more and more cases of the flu as the days became shorter and winter descended. Instead, something unexpected happened. By April there were just 229 cases of the flu…

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‘I feel like I have dementia’: Brain fog plagues Covid survivors

‘I feel like I have dementia’: Brain fog plagues Covid survivors

The New York Times reports: After contracting the coronavirus in March, Michael Reagan lost all memory of his 12-day vacation in Paris, even though the trip was just a few weeks earlier. Several weeks after Erica Taylor recovered from her Covid-19 symptoms of nausea and cough, she became confused and forgetful, failing to even recognize her own car, the only Toyota Prius in her apartment complex’s parking lot. Lisa Mizelle, a veteran nurse practitioner at an urgent care clinic who…

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There is no ‘scientific divide’ over herd immunity

There is no ‘scientific divide’ over herd immunity

Matt Reynolds writes: On October 4, in a wood-panelled room at an event hosted by a libertarian think tank, three scientists signed a document that they say offers an alternative way of responding to the Covid-19 pandemic. The signing of this so-called “Great Barrington Declaration” was greeted with clinking champagne glasses before the signatories jetted off to Washington DC on the invite of White House coronavirus advisor Scott Atlas. Aside from the three lead signatories, there is little about the…

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When COVID-19 superspreaders are talking, where you sit in the room matters

When COVID-19 superspreaders are talking, where you sit in the room matters

Classroom experiments show how the coronavirus can spread and who’s at greatest risk. Tom Werner via Getty Images By Suresh Dhaniyala, Clarkson University It doesn’t take long for airborne coronavirus particles to make their way through a room. At first, only people sitting near an infected speaker are at high risk, but as the meeting or class goes on, the tiny aerosols can spread. That doesn’t mean everyone faces the same level of risk, however. As an engineer, I have…

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What Earth owes to black holes

What Earth owes to black holes

Marina Koren writes: The first picture ever captured of a black hole, one situated in the center of another galaxy, was pretty blurry. Seen in silhouette, it appeared fuzzy, as did the ring of hot gas surrounding it. The reaction of the public did not necessarily match the unalloyed joy of astronomers accustomed to extracting cosmic wonders from lines in a graph. To anyone more familiar with black holes from epic space films, this one mostly looked like a flame-glazed…

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CDC says airborne transmission plays a role in coronavirus spread

CDC says airborne transmission plays a role in coronavirus spread

The Washington Post reports: The Centers for Disease Control and Prevention acknowledged Monday that people can sometimes be infected with the coronavirus through airborne transmission, especially in enclosed spaces with inadequate ventilation. The long-awaited update to the agency Web page explaining how the virus spreads represents an official acknowledgment of growing evidence that under certain conditions, people farther than six feet apart can become infected by tiny droplets and particles that float in the air for minutes and hours, and…

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Huge study of coronavirus cases in India offers some surprises to scientists

Huge study of coronavirus cases in India offers some surprises to scientists

The New York Times reports: With 1.3 billion people jostling for space, India has always been a hospitable environment for infectious diseases of every kind. And the coronavirus has proved to be no exception: The country now has more than six million cases, second only to the United States. An ambitious study of nearly 85,000 of those cases and nearly 600,000 of their contacts, published Wednesday in the journal Science, offers important insights not just for India, but for other…

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Why do some people weather a coronavirus infection unscathed?

Why do some people weather a coronavirus infection unscathed?

By Emily Laber-Warren One of the reasons Covid-19 has spread so swiftly around the globe is that for the first days after infection, people feel healthy. Instead of staying home in bed, they may be out and about, unknowingly passing the virus along. But in addition to these pre-symptomatic patients, the relentless silent spread of this pandemic is also facilitated by a more mysterious group of people: the so-called asymptomatics. According to various estimates, between 20 and 45 percent of the…

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Mysterious circles in the desert explained by the Turing pattern

Mysterious circles in the desert explained by the Turing pattern

Science Alert reports: It was 1952, and Alan Turing was about to reshape humanity’s understanding of biology. In a landmark paper, the English mathematician introduced what became known as the Turing pattern – the notion that the dynamics of certain uniform systems could give rise to stable patterns when disturbed. Such ‘order from disturbance’ has become the theoretical basis for all sorts of strange, repeated motifs seen in the natural world. It was a good theory. So good, in fact,…

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Fewer than 1 in 10 Americans show signs of past coronavirus infection, large national study finds

Fewer than 1 in 10 Americans show signs of past coronavirus infection, large national study finds

The Washington Post reports: Fewer than 1 in 10 Americans showed signs of past infection with the novel coronavirus as of late July, suggesting that most of the country may still be vulnerable to infection, according to one of the largest studies of its kind published Friday in the journal the Lancet. That proportion is an estimate based on the percentage of dialysis patients whose immune systems produced coronavirus antibodies. It does not indicate exactly how many Americans may be…

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‘Close to 100% accuracy’: Helsinki airport uses sniffer dogs to detect Covid-19

‘Close to 100% accuracy’: Helsinki airport uses sniffer dogs to detect Covid-19

The Guardian reports: Four Covid-19 sniffer dogs have begun work at Helsinki airport in a state-funded pilot scheme that Finnish researchers hope will provide a cheap, fast and effective alternative method of testing people for the virus. A dog is capable of detecting the presence of the coronavirus within 10 seconds and the entire process takes less than a minute to complete, according to Anna Hielm-Björkman of the University of Helsinki, who is overseeing the trial. “It’s very promising,” said…

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Charting the coronavirus pandemic over the next 12 months — and beyond

Charting the coronavirus pandemic over the next 12 months — and beyond

Andrew Joseph writes: Think back through the pandemic. Think about the moments that stand out as beacons in the haze — signposts of how it would change all of our lives. Not all of these moments were clear at the time. China’s decision to shut down cities of millions of people in January was staggering, but to most Americans, this new coronavirus remained an ocean away, not something that would demand our own version of a lockdown. Other moments form…

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Physics and information theory give a glimpse of life’s origins

Physics and information theory give a glimpse of life’s origins

Natalie Elliot writes: How did life originate? Scientists have been studying the question for decades, and they’ve developed ingenious methods to try to find out. They’ve even enlisted biology’s most powerful theory, Darwinian evolution, in the search. But they still don’t have a complete answer. What they have hit is the world’s most theoretically fertile dead end. When scientists look for life’s origins, they usually work in one of two directions. They work backwards in time through the record of…

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Will a Covid-19 vaccine be rushed through FDA approval this fall?

Will a Covid-19 vaccine be rushed through FDA approval this fall?

STAT reports: There is growing concern that the Food and Drug Administration, under political pressure, could approve a Covid-19 vaccine before it has robust safety and efficacy data. The consequences of such a decision could be significant, particularly if the vaccine is ultimately shown to be less effective than early data suggest. But an approval before the completion of large, Phase 3 trials does not have to be problematic. Experts aren’t ruling out the possibility that a vaccine could be…

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The usual diagnostic tests may simply be too sensitive and too slow to contain the spread of the coronavirus

The usual diagnostic tests may simply be too sensitive and too slow to contain the spread of the coronavirus

The New York Times reports: Some of the nation’s leading public health experts are raising a new concern in the endless debate over coronavirus testing in the United States: The standard tests are diagnosing huge numbers of people who may be carrying relatively insignificant amounts of the virus. Most of these people are not likely to be contagious, and identifying them may contribute to bottlenecks that prevent those who are contagious from being found in time. But researchers say the…

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