Four more healthcare workers had mild respiratory symptoms following exposure to the Missouri bird flu case.

It is too late for PCR testing, so the CDC is testing them for antibodies.

So far we haven't seen any confirmed bird flu infections following the Missouri case.

We have six potential exposures waiting for the results of serological testing.

The public risk is low for now. Sustained human to human spread is rare and requires mutations as humans lack the receptors in our upper airways for efficient transmission.