I’m glad CNN is saying this so clearly & directly. How is it the CDC doesn’t have billboards along the highway with this message?

www.cnn.com/2023/09/1…

Covid spreads in the air like smoke. At least half of Covid transmission happens before people develop symptoms — or even if they never develop symptoms — so people frequently spread the virus without knowing it. That’s why layered protection — the combination of masks, tests and ventilation — is so important.
Andrew Hinton @andrewhinton