WSJ:

The State Department has assessed that Russia, China and Iran are mounting increasingly intense and coordinated disinformation campaigns against the U.S. relating to the outbreak of the new coronavirus, according to an internal report.

All three countries are using state-controlled media, social media and government agencies and officials to disseminate information to domestic audiences and global audiences alike that denigrates the U.S. and spreads false accounts, the State Department report says.

The messages then are picked up and amplified by each, repeating the other’s claims, creating an echo across traditional and social media. The pattern allows officials and official sources to give credibility to information spread by unofficial sources, the report said.