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Category: Science/mathematics

California’s coronavirus strain looks increasingly dangerous: ‘The devil is already here’

California’s coronavirus strain looks increasingly dangerous: ‘The devil is already here’

The Los Angeles Times reports: A coronavirus variant that emerged in mid-2020 and surged to become the dominant strain in California not only spreads more readily than its predecessors, but also evades antibodies generated by COVID-19 vaccines or prior infection and is associated with severe illness and death, researchers said. In a study that helps explain the state’s dramatic surge in COVID-19 cases and deaths — and portends further trouble ahead — scientists at UC San Francisco said the cluster…

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Here’s what WHO’s COVID-19 mission to China found about the origins of the coronavirus

Here’s what WHO’s COVID-19 mission to China found about the origins of the coronavirus

By Dominic Dwyer, University of Sydney As I write, I am in hotel quarantine in Sydney, after returning from Wuhan, China. There, I was the Australian representative on the international World Health Organization’s (WHO) investigation into the origins of the SARS-CoV-2 virus. Much has been said of the politics surrounding the mission to investigate the viral origins of COVID-19. So it’s easy to forget that behind these investigations are real people. As part of the mission, we met the man…

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The coronavirus is here to stay — here’s what that means

The coronavirus is here to stay — here’s what that means

Nature reports: For much of the past year, life in Western Australia has been coronavirus-free. Friends gathered in pubs; people kissed and hugged their relatives; children went to school without temperature checks or wearing masks. The state maintained this enviable position only by placing heavy restrictions on travel and imposing lockdowns — some regions entered a snap lockdown at the beginning of the year after a security guard at a hotel where visitors were quarantined tested positive for the virus….

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The body is far from helpless against Coronavirus variants

The body is far from helpless against Coronavirus variants

Katherine J. Wu writes: To locate some of the world’s most superpowered cells, look no further than the human immune system. The mission of these hometown heroes is threefold: Memorize the features of dangerous microbes that breach the body’s barriers. Launch an attack to bring them to heel. Then squirrel away intel to quash future assaults. The immune system is comprehensive, capable of dueling with just about every microbe it meets. It’s archival, ace at memorizing the details of its…

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A lone infection may have changed the course of the pandemic

A lone infection may have changed the course of the pandemic

Matt Reynolds writes: In each warm body it infects, the virus behind Covid-19 has the potential to change. It can become more deadly, more transmissible or more resistant to the vaccines on which we are all pinning so much hope. Mercifully, the biology of Sars-CoV-2 means that such changes happen slowly and almost always fail to catch on. But mutations, like pandemics, are a numbers game. Every new person infected provides another opportunity for the virus to adopt a new…

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What if we never reach herd immunity?

What if we never reach herd immunity?

Sarah Zhang writes: Let’s begin by defining our terms. Herd immunity is the hazy, long-promised end of the pandemic, but its requirements are quite specific. Jennie Lavine, a biologist at Emory University, likens it to wet logs in a campfire. If there’s enough water in the logs—if there’s enough immunity in a population—“you can’t get the fire to start, period,” she says. To be more technical about it, a population reaches herd immunity when the average number of people infected…

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Virus variant first found in Britain now spreading rapidly in U.S.

Virus variant first found in Britain now spreading rapidly in U.S.

The New York Times reports: A more contagious variant of the coronavirus first found in Britain is spreading rapidly in the United States, doubling roughly every 10 days, according to a new study. Analyzing half a million coronavirus tests and hundreds of genomes, a team of researchers predicted that in a month this variant could become predominant in the United States, potentially bringing a surge of new cases and increased risk of death. The new research offers the first nationwide…

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Mutated virus may reinfect people already stricken once with covid-19, sparking debate and concerns

Mutated virus may reinfect people already stricken once with covid-19, sparking debate and concerns

The Washington Post reports: A trial of an experimental coronavirus vaccine detected the most sobering signal yet that people who have recovered from infections are not completely protected against a variant that originated in South Africa and is spreading rapidly, preliminary data presented this week suggests. The finding, though far from conclusive, has potential implications for how the pandemic will be brought under control, underscoring the critical role of vaccination, including for people who have already recovered from infections. Reaching…

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Scientists for the people

Scientists for the people

Deborah R Coen writes: In the 1930s, as Jewish and dissident scientists were forced from their posts in Nazi Germany, many found refuge at universities in the United States. At the time, American scientists were trying to shield themselves from the winds of politics by honing arguments for the value of ‘pure’ science. It was in this spirit that Abraham Flexner had founded the hermetic Institute for Advanced Study in New Jersey in 1930, expressly to pursue research for its…

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Covid-19 rarely spreads through surfaces. So why are we still deep cleaning?

Covid-19 rarely spreads through surfaces. So why are we still deep cleaning?

Nature reports: When Emanuel Goldman went to his local New Jersey supermarket last March, he didn’t take any chances. Reports of COVID-19 cases were popping up across the United States, so he donned gloves to avoid contaminated surfaces and wore a mask to prevent him inhaling tiny virus-laden droplets from fellow shoppers. Neither gloves nor masks were recommended at the time. Then, at the end of March, a laboratory study showed that the coronavirus SARS-CoV-2 can persist on plastic and…

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The hard lessons of modeling the Covid-19 pandemic

The hard lessons of modeling the Covid-19 pandemic

Jordana Cepelewicz writes: For a few months last year, Nigel Goldenfeld and Sergei Maslov, a pair of physicists at the University of Illinois, Urbana-Champaign, were unlikely celebrities in their state’s COVID-19 pandemic response — that is, until everything went wrong. Their typical areas of research include building models for condensed matter physics, viral evolution and population dynamics, not epidemiology or public health. But like many scientists from diverse fields, they joined the COVID-19 modeling effort in March, when the response…

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The unified cosmic vision of Alexander von Humboldt

The unified cosmic vision of Alexander von Humboldt

Algis Valiunas writes: The presiding scientific genius of the Romantic age, when science had not yet been dispersed into specialties that rarely connect with one another, Alexander von Humboldt wanted to know everything, and came closer than any of his contemporaries to doing so. Except for Aristotle, no scientist before or since this German polymath can boast an intellect as universal in reach as his and as influential for the salient work of his time. His neglect today is unfortunate…

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The day we let Covid-19 spin out of control

The day we let Covid-19 spin out of control

Daniel P. Oran and Eric J. Topol write: Jan. 24 marks the one-year anniversary of a momentous but largely unnoticed event in the history of the Covid-19 pandemic: the first published report of an individual infected with the novel coronavirus who never developed symptoms. This early confirmation of asymptomatic infection should have set off alarm bells and profoundly altered our response to the gathering storm. But it did not. One year later we are still paying the price for this…

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Emerging coronavirus variants may pose challenges to vaccines

Emerging coronavirus variants may pose challenges to vaccines

The New York Times reports: The steady drumbeat of reports about new variants of the coronavirus — first in Britain, then in South Africa, Brazil and the United States — have brought a new worry: Will vaccines protect against these altered versions of the virus? The answer so far is yes, several experts said in interviews. But two small new studies, posted online Tuesday night, suggest that some variants may pose unexpected challenges to the immune system, even in those…

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The coronavirus is evolving before our eyes

The coronavirus is evolving before our eyes

James Hamblin writes: In the final, darkest days of the deadliest year in U.S. history, the world received ominous news of a mutation in the SARS-CoV-2 coronavirus. Scientists in the U.K. had identified a form of the virus that was spreading rapidly throughout the nation. Then, on January 4, Prime Minister Boris Johnson announced a lockdown that began almost immediately and will last until at least the middle of February. “It’s been both frustrating and alarming to see the speed…

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Most patients hospitalized for Covid-19 still have symptoms six months later, China study finds

Most patients hospitalized for Covid-19 still have symptoms six months later, China study finds

STAT reports: Three-quarters of Covid-19 patients still have at least one symptom six months after first falling ill, researchers who followed hospital patients in China reported Friday. The new findings suggest symptoms linger longer and in a higher proportion of patients than previously thought. The largest and longest analysis to date of post-Covid recovery also warns that some patients’ antibody levels fell sharply, raising concern that while waiting for a return to full health, they could be reinfected with the…

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