The headline made me very concerned but then first two paragraphs made it make perfect sense.
The title would be infinitely less clickbait bullshit if you added one word to the end:
“In alarming move, CDC says people exposed to Covid-19 do not need testing immediately”
Even better:
“CDC says people exposed to COVID-19 should not be tested immediately after exposure”.
The alarming part is why would they put out this guidance without specifying how long to wait. Seems worse than useless as it empowers everyone to make whatever policy they want for how long to wait and then finger point at how they followed CDC guidance in doing so.