Exclusive: White House working with Facebook and Twitter to tackle anti-vaxxers

FILE PHOTO: Vehicles line up at at Dodger Stadium COVID-19 vaccination site at sunset during the outbreak of the coronavirus disease (COVID-19), in Los Angeles, California, U.S., February 1, 2021. REUTERS/Mario Anzuoni/File Photo

(In Feb. 19 story, corrects name of group in paragraph 11 to Center for Countering Digital Hate instead of Center for Countering Digital Health)

WASHINGTON (Reuters) - The White House has been reaching out to social media companies including Facebook, Twitter and Alphabet Inc's Google about clamping down on COVID misinformation and getting their help to stop it from going viral, a senior administration official said.