Can any commenter who actually has a medical degree please indicate this, so we can separate the wheat from the chaff? :-)
This comes from a team led by a woman whose credentials in this field are very nearly impeccable.
Not to mention, this article is pretty much information that we have no ability to act on. This is more like something you read and go "Huh, that's interesting" and then move on. It's an indicator that we're learning more. It doesn't need approval from your General Practitioner.
What you want is a molecular biologist or even better a virologist.