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COVID delta variant fears spur booster shot plans around the world. The latest update

The WHO calls for a pause in the world’s booster plans, while San Francisco gives Johnson & Johnson recipients the green light for an mRNA dose. Here’s what’s going on with boosters.

For the most up-to-date news and information about the coronavirus pandemic, visit the WHO and CDC websites.

Calling the eradication of the COVID-19 virus «unlikely,» a UK scientific advisory group says (PDF) there is a «realistic possibility» that a variant will emerge that is resistant to the current battery of vaccines. Governments, public health organizations and vaccine makers are all tracking developments in coronavirus variants like delta and lambda, hoping to answer the question if booster shotstargeting new variants will be needed soon.

«Things are going to get worse,» Dr. Anthony Fauci, the chief medical advisor to the president, said Sunday on ABC’s This Week.

Currently in the US, «breakthrough» coronavirus cases caused by the dominant delta variant amount to less than 1% of people who are fully vaccinated. Both Moderna and Pfizer vaccines are proven to be over 90% effective against hospitalizations and death. The surge in new COVID-19 cases are primarily affecting unvaccinated people and causing community spread, and in turn, the return of mask mandates and guidance in hard-hit areas, even for people who have full vaccine protection. The debate over mask use and vaccine boosters underscores how scientists and other health experts continue to grapple with the uncertainties of COVID-19.

The Centers for Disease Control and Prevention’s recent study shows that vaccinated people can both contract the highly contagious delta variant and spread it. According to a widely reported internal CDC memo, the delta variant spreads as easily as chicken pox, which is considered more contagious than the flu and less contagious than measles.

To prepare for the possibility of a booster shot, the CDC said it’s weighing a third vaccine dose for people with compromised immune systems. Over the weekend, Israel began administering third doses of the vaccine to those 60 and older, and the UK plans to do the same. However, this is resulting in a backlash among countries that are struggling to deliver first and second shots to residents.

On Wednesday, World Health Organization Director-General Tedros Adhanom Ghebreyesus called for a «moratorium» on booster shots in high-income countries, citing the global disparity in vaccine distribution. Of the 4 billion doses administered globally, 80% have gone to high- and upper-middle income countries that make up less than half of the world’s population, he said.

«We cannot accept countries that have already used most of the global supply of vaccines using even more of it, while the world’s most vulnerable people remain unprotected,» Tedros said.

What does all of this mean in the US? Here’s what we know about COVID booster shots now.

Booster shot vs. new COVID vaccine: There’s a difference

Along with Moderna, Pfizer’s current two-dose vaccine provides powerful and effective protection against all known variants of COVID-19, including the delta variant, according to ongoing studies and self-reported statistics. But Pfizer also announced in July that a third dose of its vaccine is currently under development. The company said its own research showed a booster shot of its current vaccine increased antibody levels five to 10 times higher over its two-dose shots, noting that its results have not been published or peer-reviewed.

Pfizer said it believes the level of protection the first two doses of its vaccine provide can gradually decrease over time, and a third booster dose may be needed «within six to 12 months» after a person is fully vaccinated with the first two doses. Pfizer said a booster shot could enhance protection against the delta variant, which has been known to infect fully vaccinated people. Clinical trials on the booster are set to begin, as Pfizer seeks approval from government regulators for a third dose.

However, while a booster shot would complement the two doses of its existing vaccine, Pfizer is also separately working on a new vaccine formulation targeting the delta variant.

What do the CDC, FDA and WHO think about a booster shot?

The CDC and FDA initially exercised caution over a booster shot.

«People who are fully vaccinated are protected from severe disease and death, including from the variants currently circulating in the country such as delta,» the CDC and FDA said in a July 8 joint statement, without naming Pfizer. The government agencies emphasized the need for all eligible people to receive full doses of one of the approved vaccines, all of which are free.

The CDC and FDA said the question of a booster requires extensive scientific data and doesn’t depend on the input from pharmaceutical companies alone. «Virtually all COVID-19 hospitalizations and deaths are among those who are unvaccinated,» the statement mentioned, adding that the agencies will approve booster doses «if and when the science demonstrates that they are needed.»

New research has demonstrated a need. There is a growing consensus among Biden administration health officials that older individuals and those with compromised immune systems may, in fact, need a third shot. At a White House press briefing Thursday, Fauci said that it is «extremely important for us to move» to get immunocompromised people a booster, citing observational data that they generally aren’t «adequately protected» with the standard vaccine dose.

«We are now working on that, and we’ll make that be implemented as quickly as possible,» Fauci said. About 2.7% of the US adult population is immunosuppressed, CNBC reported, but immunocompromised people make up about 44% of people hospitalized with COVID complications.

Earlier in the week, at a WHO press briefing Wednesday, Tedros said that while he understands «the concern of all governments to protect their people from the delta variant,» booster shots shouldn’t be prioritized until the world’s most vulnerable people and health care workers are vaccinated.

«We call on vaccine producers to prioritize Covax,» Tedros said, referring to the world’s COVID-19 vaccine distribution program.

Is Moderna also planning to develop a booster shot?

While scientists and public health officials continue to study if those who are fully vaccinated will need a booster shot, Moderna said — along with Pfizer — it is exploring a third vaccine dose to complement the initial two vaccine shots.

I got Johnson & Johnson — Do I need a booster?

No, fully vaccinated Americans don’t need a booster yet, including those who got the single dose of Johnson & Johnson’s COVID vaccine, according to the country’s health officials. But residents in San Francisco who received Johnson & Johnson’s one-dose COVID vaccine were given the green light Tuesday to get a dose of an mRNA vaccine, though it still isn’t recommended by the city’s health department.

Dr. Grant Colfax, San Francisco’s health director, said that there isn’t conclusive evidence that getting a dose of Pfizer or Moderna benefits those who got the J&J shot, but there’s also not evidence to show it’s harmful, the San Francisco Chronicle reported.

«If people received the Johnson & Johnson and are requesting a second shot, we will accommodate them, but our policy has not changed,» Colfax said.

San Francisco’s decision to legitimize Johnson & Johnson vaccine recipients getting an mRNA vaccine comes in light of a small study that suggests the vaccine isn’t nearly as effective against the delta variant as the other vaccines. (Another study suggests that Johnson & Johnson remains effective, and the drug-maker continues to claim the vaccine is effective.)

Would the booster shot be free?

The current one-dose vaccine shot from Johnson & Johnson and two-dose versions from Moderna and Pfizer are free to anyone who wants to get vaccinated. According to the Biden administration, COVID-19 booster shots will also be free, if and when they’re approved.

Is it a good idea to mix and match COVID vaccines?

The CDC doesn’t recommend mixing and matching vaccines from the different makers, saying it hasn’t evaluated the effectiveness of mixing vaccine doses and that the «vaccines are not interchangeable.»

However, other global health agencies and countries are testing administered vaccines from two different manufacturers. In the UK, for example, a recent study found that those who received a first dose of the AstraZeneca vaccine and a second of Pfizer had a higher immune response than those who received two doses of the AstraZeneca vaccine.

In early June, the National Institutes of Health started a trial that tests mixing COVID-19 vaccines, and will determine if those who got Pfizer or J&J initially can safely receive a Moderna booster. The initial results of the study are expected in late summer 2021, the NIH said in a news release.

While we wait to see how the situation develops, here’s what we know about the delta variant, more about COVID-19 boosters and if you need to continue to wear a mask.

The information contained in this article is for educational and informational purposes only and is not intended as health or medical advice. Always consult a physician or other qualified health provider regarding any questions you may have about a medical condition or health objectives.

Technologies

OpenAI and Google Take Steps to Avoid Abusive AI Imagery After Grok Scandal

AI safety, especially around images and videos, continues to be an evolving challenge.

2026 started with a horrifying example of generative AI’s potential for abuse. Grok, the AI tool from Elon Musk’s xAI, was used to undress or nudify pictures of people shared on X (formerly Twitter) at an alarming rate. Grok made 3 million sexualized images over a span of 11 days in January, with approximately 23,000 of those containing images of children, according to a study from the Center for Countering Digital Hate.

Now, competitors like OpenAI and Google are stepping up their security to avoid being the next Grok.

Advocates and safety researchers have long been concerned about AI’s ability to create abusive and illegal content. The creation and sharing of nonconsensual intimate imagery, sometimes referred to as revenge porn, was a big problem before AI. Generative AI only makes it quicker, easier and cheaper for anyone to target and victimize people. 

On Jan. 14, two weeks into the scandal, X’s Safety account confirmed in a post that it would pause Grok’s ability to edit images on the social media app. Grok’s image-generation abilities are still available to paying subscribers in its standalone app and website. X did not respond to multiple requests for comment.

Most major companies have safeguards in place to prevent the kind of wide-scale abuse that we saw was possible with Grok. But cybersecurity is never a solid metal wall of protection; it’s a brick wall that’s constantly undergoing repairs. Here’s how OpenAI and Google have tried to beef up their safety protections to circumvent Grok-like failures.

Read More: AI Slop Is Destroying the Internet. These Are the People Fighting to Save It

OpenAI fixes image generation vulnerabilities

At a base level, all AI companies have policies prohibiting the creation of illegal imagery, like child sexual abuse material, also known as CSAM. Many tech companies have guardrails to prevent the creation of intimate imagery altogether. Grok is the exception, with «spicy» modes for image and video.

Still, anyone intent on creating nonconsensual intimate imagery can try to trick AI models into doing so.

Researchers from Mindgard, a cybersecurity company focused on AI, found a vulnerability in ChatGPT that allowed people to circumvent its guardrails and make intimate images. They used a tactic called «adversarial prompting,» where testers try to poke holes in an AI with specifically crafted instructions. In this case, it was tricking the chatbot’s memory with custom prompts, then copying the nudified style onto images of well-known people.

Mindgard alerted OpenAI of its findings in early February, and the ChatGPT developer confirmed on Feb. 10 — before Mindgard went public with its report — that it had fixed the problem.

«We’re grateful to the researchers who shared their findings,» an OpenAI spokesperson said to CNET and Mindgard. «We moved quickly to fix a bug that allowed the model to generate these images. We value this kind of collaboration and remain focused on strengthening safeguards to keep users safe.»

This process is how cybersecurity often works. Outside red-team researchers like Mindgard test software for weaknesses or workarounds, mimicking strategies that bad actors might use. When they identify security gaps, they alert the software provider so fixes can be deployed.

«Assuming motivated users will not attempt to bypass safeguards is a strategic miscalculation. Attackers iterate. Guardrails must assume persistence,» Mindgard wrote in a blog post.

While tech companies boast about how you can use their AI for any purpose, they also need to make a strong promise that they can prevent AI from being used to enact abuse. For AI image generation, that means having a strong repertoire of prompts that will be refused and kicked back to users. 

When OpenAI launched its Sora 2 video model, it promised to be more conservative with its content moderation for this very reason. But it’s important to ensure its moderation practices are consistently effective, not just at a product’s launch. It makes AI safety testing an ongoing process for cybersecurity researchers and AI developers alike.

Google upgrades Search reporting

For its part, Google is taking steps to ensure abusive images aren’t spread as easily. The tech giant simplified its process for requesting the removal of explicit images from Google Search. You can click the three dots in the upper right corner of an image, click report and then tell Google you want the photo removed because it «shows a sexual image of me.» The new changes also let you select multiple images at once and track your reports more easily.

«We hope that this new removal process reduces the burden that victims of nonconsensual explicit imagery face,» the company said in a blog post.

When asked about any further steps the company is taking to prevent AI-enabled abuse, Google pointed CNET to its generative AI prohibited use policy. Google’s policy, like many other tech companies’ fine print, outlaws using AI for illegal or potentially abusive activities, such as creating intimate imagery.

There are laws that aim to help victims when these images are shared online, such as the 2025 Take It Down Act. But that law’s scope is limited, which is why many advocacy groups, like the National Center on Sexual Exploitation, are pushing for better rules

There’s no guarantee that these changes will prevent anyone from ever using AI for harassment and abuse. That’s why it’s so important that developers stay vigilant to ensure we are all protected — and act quickly when reports and problems pop up.

(Disclosure: Ziff Davis, CNET’s parent company, in 2025 filed a lawsuit against OpenAI, alleging it infringed Ziff Davis copyrights in training and operating its AI systems.)

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Jump on This Half-Off Super Mario Odyssey Deal Before It’s Gone

Best Buy just cut the price of Super Mario Odyssey for Nintendo Switch in half.

Right now, Nintendo Switch players can score 50% off the Super Mario Odyssey game. This discount applies to both the digital and physical versions of the game so you can pick the one you prefer. Best Buy is the only retailer with this discount. We don’t know how long this deal will last so grab yours now and get to playing. 

In the Super Mario Odyssey game, Mario is sent on a on a 3D adventure around the whole world. He races to stop Bowser’s wedding plans and rescue Princess Peach. The game has a ton of kingdoms, hidden secrets and fun challenges. There’s even a new character, Cappy, that teams up with Mario. 

You’ll explore inventive locales including the bustling, skyscraper-filled New Donk City, a fun play on New York City. You will also be collecting Power Moons to fuel the Odyssey airship. There’s also drop-in co-op with split Joy-Con controls. Plus, there are bonus features tied to wedding-themed figures.

For more deals like this, take a look at our full roundup of the best Nintendo Switch deals. You’ll find discounts on games, accessories and more.

Why this deal matters

Best Buy is the only retailer offering a discount on the Super Mario Odyssey for Nintendo Switch game right now. It’s sold out at Amazon. As for Target and directly at Nintendo, the game is still full price. Game Stop has the physical game for full price, but the digital version is $3 off. Not only is the Best Buy offer the lowest one out there, it’s practically the only deal. Plus it’s a 50% off deal that is impossible to beat.  

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A Planet Parade Is Happening This Week: How to See 6 Planets In the Sky

Venus, Jupiter, Saturn, Mercury, Uranus and Neptune will all be in the night sky at the same time.

One of the coolest celestial events is happening this week, where six planets will be visible in the night sky at the same time. This phenomenon, known as a planet parade, occurs only a few times each year with varying numbers of planets.

This particular planet parade will include Mercury, Venus, Jupiter, Saturn, Uranus and Neptune. It’s just one planet shy of the full set, a phenomenon that is quite rare and most recently happened a year ago, in February 2025. You’ll need a telescope to see everything, especially since much of it will occur right at dusk, which will make a few of the planets harder to see. 

When will the planet parade happen?

The Northern Hemisphere will get its best glimpse at the planet parade around sunset this week. This one will be particularly challenging for skywatchers because of light pollution, as spotting planets with the sun even partially up is more difficult. Your best bet is around 6:45 p.m. local time, and your window will be exceedingly short. Mercury and Venus drop below the horizon roughly 30 to 45 minutes later, so that’s all the time you’ll have. 

The good news is that Mercury, Venus, Saturn and Neptune are all clustered together against the western horizon near the setting sun. Venus and Mercury will be right next to each other, and Saturn and Neptune will be clumped together nearby. That should make the four of them a little bit easier to spot, which is a boon for skygazers given the short window. 

Jupiter and Uranus will be the easiest to spot and will remain in the sky long after the other four planets have dipped below the horizon. Uranus will travel across the southern sky alongside the Taurus constellation before dropping below the western horizon a few hours after midnight. Jupiter will follow a very similar path to Uranus, but it is hanging out with the Gemini constellation.

All told, the best dates to view the planet parade in the US, Canada and Mexico are Feb. 21 to 28. Before Feb. 21, Venus and Mercury will be too close to the sun. Once March begins, Mercury will drift closer to the sun again, dipping below the horizon before it’s readily visible. Once that happens, the five-planet parade will continue for about another week or so before Neptune and Saturn dip below the horizon, thus ending the parade and leaving only Venus, Jupiter and Uranus visible in the sky. 

Will the planet parade be visible in my region?

Yes. We checked Stellarium’s sky map from several locations across the US, Mexico and Canada, and the planet parade was visible in every place we checked. According to Star Walk, the parade will be visible everywhere from Tokyo to London. We also checked the Southern Hemisphere, and it’ll be visible there as well. The dates vary based on location, but most places should be able to see it at some point between now and Feb. 28. 

How can I find the various planets in the sky?

The image above gives you a general idea of where they’ll be in relation to one another, but the best thing to do is check out a sky map and plan ahead. We recommend Stellarium’s sky map if you’re on a desktop and Stellarium Mobile (Android and iOS) if you’re using your phone.

We recommend finding Venus first because it’s the easiest planet to spot out of the four that are near the sun. You can then use the app to find the other three. Jupiter and Uranus are alone in the night sky and will remain there after the other four dip below the horizon, so we recommend finding those last, since they’ll be around longer. 

Will I need any special equipment to view the parade?

Yes. With four of the planets close to the sun, it will make them hard to spot with the naked eye, thanks to the light pollution. Uranus and Neptune are impossible to see without a magnification device of some sort, even in total darkness. A telescope is highly recommended. Astronomers suggest a minimum aperture of 8 inches and 50x magnification to get the best results. That is strong enough to see the rings of Uranus and Saturn. You need a telescope with roughly 150 times magnification to peep the rings on Neptune. 

The usual space viewing tips also apply. Get away from the city to a place with as little light pollution as possible, since you’re already fighting the sun to see these things. And be very careful not to point your telescope at the sun, since that can damage your eyes. Try to pick a night with as little cloud cover as possible. 

The first of three planet parades in 2026

Planet parades are uncommon, but sometimes the universe smiles on Earth. This year is going to be really good for planet parades, as three are expected in 2026. February is the first one. The other two are slated for April (five planets) and August (six planets). That means there are two more chances to watch a planet parade in 2026 if you miss the one in February.

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