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Category: Science/mathematics

As India’s lockdown ends, exodus from cities risks spreading Covid-19 far and wide

As India’s lockdown ends, exodus from cities risks spreading Covid-19 far and wide

Science reports: One morning in mid-May, Nasim Qureshi suddenly developed a fever, cough, and shortness of breath. Qureshi, a member of Mumbai, India’s street vendor union, rushed to a small private hospital, where doctors gave him a check up but refused to admit him. Later the same day, he was turned away from two more hospitals before he finally found a bed at a municipal hospital. By then, his breathing trouble had worsened—and the hospital only had a few ventilators….

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Coronavirus may become endemic, even with a vaccine

Coronavirus may become endemic, even with a vaccine

The Washington Post reports: There’s a good chance the coronavirus will never go away. Even after a vaccine is discovered and deployed, the coronavirus will likely remain for decades to come, circulating among the world’s population. Experts call such diseases endemic — stubbornly resisting efforts to stamp them out. Think measles, HIV, chickenpox. It is a daunting proposition — a coronavirus-tinged world without a foreseeable end. But experts in epidemiology, disaster planning and vaccine development say embracing that reality is…

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New research rewrites history of when Covid-19 arrived in U.S. — pointing to missed chances to stop it

New research rewrites history of when Covid-19 arrived in U.S. — pointing to missed chances to stop it

Helen Branswell writes: New research has poured cold water on the theory that the Covid-19 outbreak in Washington state — the country’s first — was triggered by the very first confirmed case of the infection in the country. Instead, it suggests the person who ignited the first chain of sustained transmission in the United States probably returned to the country in mid-February, a month later. The work adds to evidence that the United States missed opportunities to stop the SARS-CoV-2…

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More than a fifth of people in England believe Covid-19 is a hoax

More than a fifth of people in England believe Covid-19 is a hoax

The Independent reports: More than a fifth of people believe that the coronavirus crisis is a hoax, new research suggests. The study, conducted by the University of Oxford, saw 2,500 English adults take part in the Oxford Coronavirus Explanations, Attitudes, and Narratives Survey between 4-11 May 2020. The team of clinical psychologists state that the data from the survey indicates a large number of adults in England do not agree with the scientific and governmental consensus on the Covid-19 pandemic….

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Covid-19’s deadly rampage through a South African hospital

Covid-19’s deadly rampage through a South African hospital

Science reports: On 9 March, a patient who had recently traveled to Europe and had symptoms of COVID-19 visited the emergency department of St Augustine’s, a private hospital in Durban, South Africa. Eight weeks later, 39 patients and 80 staff linked to the hospital had been infected, and 15 patients had died—fully half the death toll in KwaZulu-Natal province at that time. Now, scientists at the University of KwaZulu-Natal have published a detailed reconstruction of how the virus spread from…

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Why we can’t be sure we’ll get a coronavirus vaccine

Why we can’t be sure we’ll get a coronavirus vaccine

Ian Sample reports: Earlier this week, England’s deputy chief medical officer Jonathan Van-Tam said the words nobody wanted to hear: “We can’t be sure we will get a vaccine.” But he was right to be circumspect. Vaccines are simple in principle but complex in practice. The ideal vaccine protects against infection, prevents its spread, and does so safely. But none of this is easily achieved, as vaccine timelines show. More than 30 years after scientists isolated HIV, the virus that…

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Hydroxychloroquine linked to increased risk of death in coronavirus patients, analysis of 96,000 patients shows

Hydroxychloroquine linked to increased risk of death in coronavirus patients, analysis of 96,000 patients shows

The Washington Post reports: A study of 96,000 hospitalized coronavirus patients on six continents found that those who received an antimalarial drug promoted by President Trump as a “game changer” in the fight against the virus had a significantly higher risk of death compared with those who did not. People treated with hydroxychloroquine, or the closely related drug chloroquine, were also more likely to develop a type of irregular heart rhythm, or arrhythmia, that can lead to sudden cardiac death,…

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How staying indoors affects your immune system

How staying indoors affects your immune system

Linda Geddes writes: For the past two months, a sizable chunk of the world’s population has been shuttered inside their homes, only stepping out for essential supplies. Although this may have reduced our chances of being exposed to coronavirus, it may have had a less obvious effect on our immune systems by leaving us more vulnerable to other infections. Humans evolved on a planet with a 24-hour cycle of light and dark, and our bodies are set up to work…

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The CDC is conflating viral and antibody tests, compromising crucial metrics governors depend on to reopen their economies

The CDC is conflating viral and antibody tests, compromising crucial metrics governors depend on to reopen their economies

The Atlantic reports: The Centers for Disease Control and Prevention is conflating the results of two different types of coronavirus tests, distorting several important metrics and providing the country with an inaccurate picture of the state of the pandemic. We’ve learned that the CDC is making, at best, a debilitating mistake: combining test results that diagnose current coronavirus infections with test results that measure whether someone has ever had the virus. The upshot is that the government’s disease-fighting agency is…

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How SARS-CoV-2 hijacks cells

How SARS-CoV-2 hijacks cells

Sharon Begley writes: A deep dive into how the new coronavirus infects cells has found that it orchestrates a hostile takeover of their genes unlike any other known viruses do, producing what one leading scientist calls “unique” and “aberrant” changes. Recent studies show that in seizing control of genes in the human cells it invades, the virus changes how segments of DNA are read, doing so in a way that might explain why the elderly are more likely to die…

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Why do some Covid-19 patients infect many others, whereas most don’t spread the virus at all?

Why do some Covid-19 patients infect many others, whereas most don’t spread the virus at all?

Science reports: When 61 people met for a choir practice in a church in Mount Vernon, Washington, on 10 March, everything seemed normal. For 2.5 hours the chorists sang, snacked on cookies and oranges, and sang some more. But one of them had been suffering for 3 days from what felt like a cold—and turned out to be COVID-19. In the following weeks, 53 choir members got sick, three were hospitalized, and two died, according to a 12 May report…

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How Bolinas mounted one of the most advanced coronavirus-testing efforts in America

How Bolinas mounted one of the most advanced coronavirus-testing efforts in America

Nathan Heller writes: This winter … the coronavirus brought a wave of social change from which Bolinas [a tiny hippie enclave north of San Francisco] could not flee. On January 11th, China reported its first death caused by covid-19; on January 21st, a resident of Washington State, who had travelled to Wuhan, became the first confirmed case in the United States; and, by mid-February, fatalities spanned the world. On March 16th, a group of counties across the Bay Area declared…

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The coronavirus is coursing through different parts of the U.S. in different, harder to predict, ways

The coronavirus is coursing through different parts of the U.S. in different, harder to predict, ways

Ed Yong writes: There was supposed to be a peak. But the stark turning point, when the number of daily COVID-19 cases in the U.S. finally crested and began descending sharply, never happened. Instead, America spent much of April on a disquieting plateau, with every day bringing about 30,000 new cases and about 2,000 new deaths. The graphs were more mesa than Matterhorn—flat-topped, not sharp-peaked. Only this month has the slope started gently heading downward. This pattern exists because different…

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CDC staff being ‘muzzled’ as White House puts politics ahead of science

CDC staff being ‘muzzled’ as White House puts politics ahead of science

CNN reports: In the early weeks of the US coronavirus outbreak, staff members in the U.S. Centers for Disease Control and Prevention had tracked a growing number of transmissions in Europe and elsewhere, and proposed a global advisory that would alert flyers to the dangers of air travel. But about a week passed before the alert was issued publicly — crucial time lost when about 66,000 European travelers were streaming into American airports every day. The delay, detailed in documents…

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Study shows that wearing masks can reduce coronavirus transmission rate by as much as 75%

Study shows that wearing masks can reduce coronavirus transmission rate by as much as 75%

CNBC reports: As the debate over the effectiveness of wearing masks during a pandemic continues, a new study gives weight to arguments by medical professionals and government leaders that wearing a mask does indeed reduce virus transmission — and dramatically so. Experiments by a team in Hong Kong found that the coronavirus’ transmission rate via respiratory droplets or airborne particles dropped by as much as 75% when surgical masks were used. “The findings implied to the world and the public…

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Coronavirus, ‘Plandemic’ and the seven traits of conspiratorial thinking

Coronavirus, ‘Plandemic’ and the seven traits of conspiratorial thinking

No matter the details of the plot, conspiracy theories follow common patterns of thought. Ranta Images/iStock/Getty Images Plus By John Cook, George Mason University; Sander van der Linden, University of Cambridge; Stephan Lewandowsky, University of Bristol, and Ullrich Ecker, University of Western Australia The conspiracy theory video “Plandemic” recently went viral. Despite being taken down by YouTube and Facebook, it continues to get uploaded and viewed millions of times. The video is an interview with conspiracy theorist Judy Mikovits, a…

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