Comment by johnwheeler

Edit: found this below https://news.ycombinator.com/item?id=22535930 (see sampo’s response in comments)

I am completely baffled to the meaning of this given the scientific nomenclature used, but I would really like to know what it means and why it is front page HN.

What I imagine it means is that the red things on this picture

https://www.cdc.gov/homepage/images/banner/covid-19-1330px.j...

have some sort of indentation, or cleavage, that makes them either more or less dangerous.

Am I close? Can someone who understands explain for the layman?