>> so this -- so alex, this comes out of a very interesting study by a big data management group and ai group out of cambridge, massachusetts. i haven't heard a lot about them before this, but they put up a very interesting preprint where because of their database, they compared the omicron sequence to 5 million other coronavirus sequence, which includes all of the current covid variants that we know about, plus not many people realize this, but there are several coronaviruses even before this pandemic that were known to cause upper respiratory infections. they're a less common cause of the common cold, and when that was done, there was a unique signature sequence that was found from one of those upper respiratory coronavirus viruses, and so their hypothesis, which i think has some merit, is that perhaps an individual who got a