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Will a first-dose vaccine strategy help beat the variants?

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3 years ago

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Will a first-dose vaccine strategy help beat the variants?


In a report released on February 23, Osterholm and his colleagues calculate that temporarily prioritizing first doses for those over the age of 65 might save as many as 39,000 lives. “There is a narrow and rapidly closing window of opportunity to more effectively use vaccines and potentially prevent thousands of severe cases, hospitalizations, and deaths in the next weeks and months,” the authors write. 

The UK adopted a similar strategy in December, and Quebec announced in January that it would stop holding back booster shots and try to vaccinate as many people as possible, delaying the second shot for up to 90 days. 

But many public health experts, including senior advisors in the Biden administration, argue that there isn’t enough data to support a switch to a one-dose strategy. They worry that deferring the second dose will leave people vulnerable to infection, and potentially give rise to new variants that can evade the immune response. And there are logistics to consider. Switching strategies now would complicate the rollout, says Céline Gounder, an epidemiologist at the NYU Grossman School of Medicine and member of the Biden administration’s covid-19 Advisory Board. “You’re really having to break the current system, which is already very fragile,” she says. It also might hamper the public’s already tenuous trust in the vaccine. 

“Given the information we have right now, we will stick with the scientifically documented efficacy and optimal response of a prime followed by a boost,” said Anthony Fauci, President Biden’s chief medical advisor, in a press briefing on February 19. Andy Slavitt, White House senior advisor on the COVID-19 response, agreed. “The recommendation from the FDA is two doses, just as it always has been,” he said. 

The big protection question

The debate hinges on how much protection one dose really offers and how long that protection lasts. 

In the large clinical trials, Moderna and Pfizer saw good efficacy even before the second shot. The first dose of the Pfizer vaccine provided 52% protection against symptomatic covid-19, and the Moderna shot achieved efficacy of 80%. But those figures included the days immediately after vaccination, when the immune system is still ramping up its response. When researchers looked at efficacy two weeks from the date of the shot, they found much higher numbers. One analysis suggests the Pfizer vaccine reached nearly 92% efficacy before the second shot. The first dose of the Moderna shot  was 92% efficacious after two weeks. 

And new research hints that one dose might offer some protection in a real-world setting too. In a new study in the New England Journal of Medicine, researchers examined medical records from nearly 600,000 vaccinated individuals in Israel and the same number of controls. The first dose of the Pfizer vaccine was 46% effective against SARS-CoV-2 infection between days 14 and 20. The shot did an even better job of preventing hospitalization and death: protection was 74% and 72%, respectively.

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The Download: COP28 controversy and the future of families

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3 hours ago

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11/28/2023

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The Download: COP28 controversy and the future of families


The United Arab Emirates is one of the world’s largest oil producers. It’s also the site of this year’s UN COP28 climate summit, which kicks off later this week in Dubai. 

It’s a controversial host, but the truth is that there’s massive potential for oil and gas companies to help address climate change, both by cleaning up their operations and by investing their considerable wealth and expertise into new technologies.

The problem is that these companies also have a vested interest in preserving the status quo. If they want to be part of a net-zero future, something will need to change—and soon. Read the full story.

—Casey Crownhart

How reproductive technology can reverse population decline

Birth rates have been plummeting in wealthy countries, well below the “replacement” rate. Even in China, a dramatic downturn in the number of babies has officials scrambling, as its population growth turns negative.

So, what’s behind the baby bust and can new reproductive technology reverse the trend? MIT Technology Review is hosting a subscriber-only Roundtables discussion on how innovations from the lab could affect the future of families at 11am ET this morning, featuring Antonio Regalado, our biotechnology editor, and entrepreneur Martín Varsavsky, founder of fertility clinic Prelude Fertility. Don’t miss out—make sure you register now.

The must-reads

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Unpacking the hype around OpenAI’s rumored new Q* model

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23 hours ago

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11/27/2023

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Unpacking the hype around OpenAI’s rumored new Q* model


While we still don’t know all the details, there have been reports that researchers at OpenAI had made a “breakthrough” in AI that had alarmed staff members. Reuters and The Information both report that researchers had come up with a new way to make powerful AI systems and had created a new model, called Q* (pronounced Q star), that was able to perform grade-school-level math. According to the people who spoke to Reuters, some at OpenAI believe this could be a milestone in the company’s quest to build artificial general intelligence, a much-hyped concept referring to an AI system that is smarter than humans. The company declined to comment on Q*. 

Social media is full of speculation and excessive hype, so I called some experts to find out how big a deal any breakthrough in math and AI would really be.

Researchers have for years tried to get AI models to solve math problems. Language models like ChatGPT and GPT-4 can do some math, but not very well or reliably. We currently don’t have the algorithms or even the right architectures to be able to solve math problems reliably using AI, says Wenda Li, an AI lecturer at the University of Edinburgh. Deep learning and transformers (a kind of neural network), which is what language models use, are excellent at recognizing patterns, but that alone is likely not enough, Li adds. 

Math is a benchmark for reasoning, Li says. A machine that is able to reason about mathematics, could, in theory, be able to learn to do other tasks that build on existing information, such as writing computer code or drawing conclusions from a news article. Math is a particularly hard challenge because it requires AI models to have the capacity to reason and to really understand what they are dealing with. 

A generative AI system that could reliably do math would need to have a really firm grasp on concrete definitions of particular concepts that can get very abstract. A lot of math problems also require some level of planning over multiple steps, says Katie Collins, a PhD researcher at the University of Cambridge, who specializes in math and AI. Indeed, Yann LeCun, chief AI scientist at Meta, posted on X and LinkedIn over the weekend that he thinks Q* is likely to be “OpenAI attempts at planning.”

People who worry about whether AI poses an existential risk to humans, one of OpenAI’s founding concerns, fear that such capabilities might lead to rogue AI. Safety concerns might arise if such AI systems are allowed to set their own goals and start to interface with a real physical or digital world in some ways, says Collins. 

But while math capability might take us a step closer to more powerful AI systems, solving these sorts of math problems doesn’t signal the birth of a superintelligence. 

“I don’t think it immediately gets us to AGI or scary situations,” says Collins.  It’s also very important to underline what kind of math problems AI is solving, she adds.

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The Download: unpacking OpenAI Q* hype, and X’s financial woes

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1 day ago

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11/27/2023

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📈


This is today’s edition of The Download, our weekday newsletter that provides a daily dose of what’s going on in the world of technology.

Unpacking the hype around OpenAI’s rumored new Q* model

Ever since last week’s dramatic events at OpenAI, the rumor mill has been in overdrive about why the company’s board tried to oust CEO Sam Altman.

While we still don’t know all the details, there have been reports that researchers at OpenAI had made a “breakthrough” in AI that alarmed staff members. The claim is that they came up with a new way to make powerful AI systems and had created a new model, called Q* (pronounced Q star), that was able to perform grade-school level math.

Some at OpenAI reportedly believe this could be a breakthrough in the company’s quest to build artificial general intelligence, a much-hyped concept of an AI system that is smarter than humans.

So what’s actually going on? And why is grade-school math such a big deal? Our senior AI reporter Melissa Heikkilä called some experts to find out how big of a deal any such breakthrough would really be. Here’s what they had to say.

This story is from The Algorithm, our weekly newsletter giving you the inside track on all things AI. Sign up to receive it in your inbox every Monday.

The must-reads

I’ve combed the internet to find you today’s most fun/important/scary/fascinating stories about technology.

1 X is hemorrhaging millions in advertising revenue 
Internal documents show the company is in an even worse position than previously thought. (NYT $)
+ Misinformation ‘super-spreaders’ on X are reportedly eligible for payouts from its ad revenue sharing program. (The Verge)
+ It’s not just you: tech billionaires really are becoming more unbearable. (The Guardian)
 
2 The brakes seem to now be off on AI development 
With Sam Altman’s return to OpenAI, the ‘accelerationists’ have come out on top. (WSJ $)
+ Inside the mind of OpenAI’s chief scientist, Ilya Sutskever. (MIT Technology Review)
 
3 How Norway got heat pumps into two-thirds of its households
Mostly by making it the cheaper choice for people. (The Guardian)
+ Everything you need to know about the wild world of heat pumps. (MIT Technology Review)
 
4 How your social media feeds shape how you see the Israel-Gaza war
Masses of content are being pumped out, rarely with any nuance or historical understanding. (BBC)
+ China tried to keep kids off social media. Now the elderly are hooked. (Wired $)
 
5 US regulators have surprisingly little scope to enforce Amazon’s safety rules
As demonstrated by the measly $7,000 fine issued by Indiana after a worker was killed by warehouse machinery. (WP $)
 
6 How Ukraine is using advanced technologies on the battlefield 
The Pentagon is using the conflict as a testbed for some of the 800-odd AI-based projects it has in progress. (AP $)
+ Why business is booming for military AI startups. (MIT Technology Review)
 
7 Shein is trying to overhaul its image, with limited success
Its products seem too cheap to be ethically sourced—and it doesn’t take kindly to people pointing that out. (The Verge)
+ Why my bittersweet relationship with Shein had to end. (MIT Technology Review)
 
8 Every app can be a dating app now 💑
As people turn their backs on the traditional apps, they’re finding love in places like Yelp, Duolingo and Strava. (WSJ $)
+ Job sharing apps are also becoming more popular. (BBC)
 
9 People can’t get enough of work livestreams on TikTok
It’s mostly about the weirdly hypnotic quality of watching people doing tasks like manicures or frying eggs. (The Atlantic $)
 
10 A handy guide to time travel in the movies
Whether you prioritize scientific accuracy or entertainment value, this chart has got you covered. (Ars Technica)

Quote of the day

“It’s in the AI industry’s interest to make people think that only the big players can do this—but it’s not true.”

—Ed Newton-Rex, who just resigned as VP of audio at Stability.AI, says the idea that generative AI models can only be built by scraping artists’ work is a myth in an interview with The Next Web. 

The big story

The YouTube baker fighting back against deadly “craft hacks”

rainbow glue coming out of a hotglue gun onto a toothbrush, surrounded by caution tape

STEPHANIE ARNETT/MITTR | ENVATO, GETTY

September 2022

Ann Reardon is probably the last person you’d expect to be banned from YouTube. A former Australian youth worker and a mother of three, she’s been teaching millions of subscribers how to bake since 2011. 

However, more recently, Reardon has been using her platform to warn people about dangerous new “craft hacks” that are sweeping YouTube, such as poaching eggs in a microwave, bleaching strawberries, and using a Coke can and a flame to pop popcorn.

Reardon was banned because she got caught up in YouTube’s messy moderation policies. In doing so, she exposed a failing in the system: How can a warning about harmful hacks be deemed dangerous when the hack videos themselves are not? Read the full story.

—Amelia Tait

We can still have nice things

A place for comfort, fun and distraction to brighten up your day. (Got any ideas? Drop me a line or tweet ’em at me.)

+ London’s future skyline is looking increasingly like New York’s.
+ Whovians will never agree on who has the honor of being the best Doctor.
+ How to get into mixing music like a pro.
+ This Japanese sea worm has a neat trick up its sleeve—splitting itself in two in the quest for love.
+ Did you know there’s a mysterious tunnel under Seoul?



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