“We’re helping millions of people stay connected while also jointly combating fraud and misinformation about the virus, elevating authoritative content on our platforms, and sharing critical updates in coordination with government health care agencies around the world,” according to a joint statement from the companies issued Monday.

The technology giants and social networks said other companies are welcome to join their efforts. The White House Office of Science and Technology Policy on Monday also said it “has convened, and will continue to, a number of meetings with different groups of American tech companies and industry associations as part of our whole-of-America response to Covid-19.”