CDC has taken this new stance in response to the exposure that Dr Fauci was at least partly responsible for the origin of Covid-19. He was taking grant money from the NIH, laundering it through a middle company (EcoHealth, NYC) who then sent it to the Wuhan virology lab. Wuhan researches and uses 'gain of funtion' tools to increase viral lethality. Wuhan has also been known for sloppy/poor/inexcusable handling of dangerous SARS pathogens in the past, i.e. the first SARS virus outbreak (2002-2004). Gain of function research is banned in the USA because it is considered too risky for even our highest security labs. Fauci went around that ban to Wuhan to continue the research, in spite of their lack of safety protocols.
Dr Rand Paul eviscerated Fauci earlier this week during a Congressional hearing interrogation and brought all the above to light. Unfortunately, if you only watch cable news, you missed it. But now, the CDC has to make the Covid-19 panic stories go away before you find out the dirty truth.