Posts circulating on Facebook and Instagram claim the Centers for Disease Control and Prevention will stop using its COVID-19 test because it cannot differentiate between the COVID virus and flu viruses.

“CDC has just announced they will revoke the emergency use authorization of the RT-PCR tests first introduced in 2/20,” reads a July 25 post, which goes on to quote from the agency’s lab directive: “CDC encourages laboratories to consider adoption of a multiplexed method that can facilitate detection and differentiation of SARS CoV-2 and influenza viruses.” It continues: “Translation: They’ve been adding flu cases to COVID cases when using that test.”