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Photo: Saul Martinez/Getty Images

It's notable that Twitter, like other social networks, has announced stricter rules on virus-related misinformation than other types of false posts. Even more notable, though, is that Twitter has actually enforced its rules against prominent accounts in recent days.

Why it matters: Twitter has been criticized for being lax to enforce its rules, particularly against well-known politicians and celebrities.

Driving the news: Twitter temporarily locked the account of The Federalist after it linked to one of its articles suggesting the best way to approach the coronavirus was to spread it to as many young people as possible quickly in order to build immunity.

  • Twitter deleted a tweet from Rudy Giuliani quoting conservative activist Charlie Kirk, who touted hydroxychloroquine, an anti-malaria drug, as a cure for the coronavirus. (It has yet to be scientifically determined to be effective at treating COVID-19.)
  • Twitter deleted a pair of tweets by Brazilian President Jair Bolsonaro that cast doubt on the need for quarantines. Bolsonaro has downplayed the risks of the coronavirus.

Twitter has made several adjustments to its rules specifically targeting misinformation about COVID-19, including how it is spread and transmitted as well as cures and treatments not backed up by medical authorities.

Yes, but: There are plenty of examples of Twitter failing to act, even regarding the coronavirus. The company allowed to stand a tweet from Elon Musk that said that children were immune from COVID-19 (they aren't) as well as other tweets of dubious veracity.

Go deeper: Coronavirus panic sells as alarmist information flies on social media

Go deeper

Minnesota schools "all over the board" with mask-wearing guidance

Illustration: Brendan Lynch/Axios

Minnesota and federal health officials are urging universal masking in schools this fall, but not all local districts are following suit so far.

Driving the news: The Minnesota Department of Health issued new back-to-school guidance Wednesday, encouraging mask use indoors for students and teachers regardless of vaccination status.

  • Unlike last year, the state won't mandate mask use. Decisions will be up to local districts and school boards.
Updated 36 mins ago - Sports

Olympics dashboard

Team USA's Simone Biles during the women's team final on day four of the Tokyo 2020 Olympic Games at Ariake Gymnastics Centre on Tuesday in Japan. Photo: Fred Lee/Getty Images

🤸🏾‍♀️: Simone Biles reacts to "love and support" after withdrawing from all-around gymnastics and team finals, citing her mental health

🏃: U.S. pole vaulter Sam Kendricks withdraws from Games after positive coronavirus test

🏊‍♂️: Caeleb Dressel wins gold in men's 100m freestyle —Bobby Finke wins gold in first men's Olympic 800m freestyle

📷: In photos: Tokyo Olympics day 6 highlights

🗓: The Olympic events to watch today

💵: Olympic athletes see more sponsorship opportunities

🏃‍: Female Olympians push back against double standard in uniforms

Go deeper: Full Axios coverage - Medal tracker

Felix Salmon, author of Capital
53 mins ago - Economy & Business

Giant earnings growth for the world's largest companies

Illustration: Aïda Amer/Axios

Never in the history of capitalism have the world's biggest companies grown as fast as the tech giants in recent years.

Why it matters: A series of stunning earnings reports this week — with another one likely to arrive Thursday afternoon, from Amazon — has underscored the astonishing growth among a group of companies that were already some of the most profitable of all time.