> It's clearly an overestimate, as literally 60 people have gotten tested in the US.
Those numbers are largely from outbreaks that happened a few years back, in some cases with more extensive testing. The current US outbreak is (so far, and hopefully it continues that way) small enough that you can't read much into the numbers either way.
> If it was very severe we'd know it already.
Not if human-human transmission is nearly impossible with the current strain, as it seems to be. This shouldn't be _too_ reassuring, as the same went for H1N1 until 1918 (in the next two years it killed 50 million people). H5N1 kills people via a cytokine swarm, same as H1N1, though it seems to be more dramatic, and like H1N1 tends to preferentially kill young people.
Like, I'm not saying "panic, it's definitely going to be the next COVID only worse, shut everything down", but it deserves more attention from the authorities than it's necessarily getting.
Interestingly, some of the more pointless COVID precautions (especially the early emphasis on gloves and things) probably showed up because the WHO was so fixated on the idea that the next pandemic would be either H1N1 or H5N1, and fomites are a big deal for influenza in a way that they're not for COVID.