Facebook and Twitter took action against a post from President Trump Tuesday that claimed that COVID-19 is “far less lethal” than the flu. Trump made the tweet and posted the same message to Facebook just hours after arriving back at the White House following a multi-day stay at Walter Reed medical center, where the president was treated after testing positive for COVID-19.

Facebook took down Trump’s post outright Tuesday, stating that it “[removes] incorrect information about the severity of COVID-19, and have now removed this post.” Twitter hid the tweet behind a warning saying that it broke the platform’s rules about spreading misleading or harmful COVID-19 misinformation.

“We placed a public interest notice on this Tweet for violating our COVID-19 Misleading Information Policy by making misleading health claims about COVID-19,” a Twitter spokesperson said.

Taking down one of the president’s posts is rare but it wasn’t a first for Facebook. In August, Facebook removed a video Trump shared in which he claimed that children are “almost immune” to COVID-19. The clip originally aired on Fox News.

On twitter, Trump’s tweet will have “significantly limited” engagement, meaning that it can’t be retweeted without quoting, liked or replied to, but it will remain up because it’s in the public interest. By the time Twitter took action on the tweet it had more than 59,000 retweets and 186,000 likes.

Facebook and Twitter both created new policies to address the spread of pandemic-related misinformation earlier this year. In the pandemic’s earlier days, the false claim that COVID is comparable to the flu was a common refrain from Trump and his allies, who wished to downplay the severity of the virus. But after months of the virus raging through communities around the U.S., the claim that COVID-19 is like the flu is an even more glaring lie.

While much remains not understood about the virus, it can follow an aggressive and unpredictable trajectory in patients, attacking vital organs beyond the lungs and leaving people who contracted it with long-lasting health effects that are not yet thoroughly studied or understood. Trump’s own physician has said the president “may not be out of the woods yet” in his own fight with the virus.

In recent months, the president’s social media falsehoods had shifted more toward lies about the safety of vote-by-mail, the system many Americans will rely on to cast votes as the pandemic rages on.

But less than a day out of a multi-day stay at the hospital, where he was given supplemental oxygen and three experimental treatments, it’s clear Trump’s own diagnosis with the virus doesn’t mean he intends to treat with any seriousness at all the health threat that’s upended the economy and claimed more than 200,000 lives in the U.S.

Instead, Trump is poised to continue waging a political war against platforms like Twitter and Facebook — if the results of the election give him the chance. Trump has already expressed interest in dismantling Section 230, a key legal provision that protects platforms from liability for user-generated content.

He tweeted “REPEAL SECTION 230!!!” Tuesday after Twitter and Facebook took action against his posts saying the flu is worse than COVID-19.