This morning, the director of the Centers for Disease Control and Prevention, Dr. Rochelle Walensky, told reporters that the seven-day average of Covid-19 cases has jumped almost 70 percent in the last week. Yesterday the U.S. had more than 33,000 new cases. Hospital admissions have jumped about 36% over the same period, to about 2,790 a day. And, after dropping for weeks, the seven-day average of deaths per day has also increased, rising 26% to 211 deaths per day.

Walensky called it “a pandemic of the unvaccinated.” Fully vaccinated individuals can still get Covid-19, but they are protected against the worst of it. They should not need hospitalization and will almost certainly not die. They are protected against the new Delta variant now sweeping the world, as well as against the older variants.

Jeffrey Zients, the coordinator of the Covid-19 response, told reporters that the United States has fully vaccinated more than 160 million Americans but low-vaccination pockets are driving a new spike. In the past week, just four states produced more than 40% of cases. Florida alone accounted for one in five cases.

Virtually all recent hospitalizations and deaths are among the unvaccinated.

Zients explained that the administration is working to bring vaccines directly to individuals. As well, it is working with trusted messengers to urge people to get vaccinated. This week, the administration amped up its efforts to encourage vaccination by joining with Olivia Rodrigo, the wildly popular 18-year-old actress and singer, to urge young people to get vaccinated. In a video she recorded with Dr. Anthony Fauci, the director of the U.S. National Institute of Allergy and Infectious Diseases, and the chief medical adviser to the president, Fauci told Rodrigo, who was born in 2003, about the greatest concert he ever attended: he saw the Temptations and the Four Tops at the Paramount Theatre in New York City in the late 1950s.

Rodrigo’s debut single, “Drivers License,” was released on January 8 in the midst of the pandemic; it debuted at number one on Billboard Hot 100, the nation’s standard record chart. Three months later, on April 1, 2021, her second single, “Deja Vu,” debuted at number eight, and on May 14, 2021, her third single, “Good 4 U,” debuted at number one, making her the first artist in the history of the charts to debut their first three singles in the top ten (which has nothing to do with vaccines, but it’s cool).

The White House is also trying now to combat disinformation and misinformation head on. Yesterday the Surgeon General, Dr. Vivek Murthy, issued a Surgeon General’s Advisory on the dangers of health misinformation. A Surgeon General’s Advisory is a public statement calling attention to a public health issue and making recommendations for addressing that issue.

The advisory calls out social media for spreading false, inaccurate, or misleading information about both coronavirus and the vaccine, bad information that has led people to reject basic health measures like masks and to attack frontline workers trying to enforce those measures.

The advisory blames social media in explicit terms, noting that misinformation is framed to hit emotions so that people get outraged and spread it quickly, that technology platforms incentivize people to share such highly charged content, and that social media platforms use algorithms to steer users toward content similar to things they have previously liked, building disinformation bubbles.

“Health misinformation has cost us lives,” Murthy told reporters at the White House today. “Technology companies have enabled misinformation to poison our information environment with little accountability to their users. It allowed people who intentionally spread misinformation—what we call ‘disinformation’—to have extraordinary reach.”

“In this advisory, we’re telling technology companies that we expect more,” he said. “We’re asking them to operate with greater transparency, to modify their algorithms to avoid amplifying misinformation, and to swiftly and consistently take action against misinformation super-spreaders on their platforms.”

Researchers at the Center for Countering Digital Hate have discovered that 65% of the shares of anti-vaccine misinformation on social media have come from just 12 people, nicknamed the “Disinformation Dozen.” Social media have been slow to remove their access to social media sites, or even their false content. According to Zolan Kanno-Youngs and Cecilia Kang of the New York Times, the White House has tried for weeks to get Facebook to explain how it is combating disinformation about the vaccine but has not received answers.

Republicans, already mad at social media giants for kicking off the former president, promptly claimed that Democrats were trying to censor free speech. Notably, Fox News Channel personalities and Republican leaders have been casting doubt on the vaccines since Biden took office and vowed to make combating the pandemic his signature success.

That the White House called out social media algorithms that skew information is clearly a concern for Facebook, for such algorithms could be regulated by the government while speech cannot. Facebook spokesperson Dani Lever rejected the idea that Facebook has contributed to disinformation, saying that the site has provided more good information about the coronavirus and vaccines than any other place on the internet.

As he boarded Marine One on his way to Camp David in Maryland for the weekend, reporters asked the president what he would say to social media executives about the disinformation on their platforms. “They’re killing people,” he said. “Look, the only pandemic we have is among the unvaccinated, and that—and they’re killing people.”