U.S. President Joe Biden said Friday that social media companies are “killing people” by failing to police misinformation on their platforms about COVID-19 vaccines.

Biden’s comments came a day after U.S. Surgeon General Vivek Murthy declared misinformation about the vaccines a threat to public health, and as U.S. officials advised that deaths and serious illness from the virus are almost entirely preventable because of the vaccines.

Biden, asked if he had a message for platforms like Facebook where false or misleading information about the coronavirus vaccines has spread, told reporters, “They’re killing people.”

“The only pandemic we have is among