Facebook on Friday rejected criticism by US President Joe Biden that social media misinformation is killing people, saying its efforts to get facts out are actually saving lives.

In this file photo illustration taken on May 27, 2021, a smart phone screen displays a new policy on Covid-19 misinformation with a Facebook website in the background in Arlington, Virginia. (Photo: AFP)

"We will not be distracted by accusations which aren't supported by the facts," Facebook said of Biden's barb.

More than two billion people have viewed authoritative information about Covid-19 and vaccines on Facebook, which is more than any other place on the internet, according to the leading social network.