4 posted on 10/03/2022 7:33:36 PM PDT by null and void
(Can't hear the Rod Serling narration? You are not in the audience. You are a part of the story.)
I believe URF stands for Under Reporting Factor. I.e., the VAERs data was originally (a study by Harvard around 5 years ago) found to undercount adverse events by 100x. But I think they found it is closer to 40x undercounting in the CoVid era.
8 posted on 10/03/2022 8:13:26 PM PDT by El Cid
(Believe on the Lord Jesus Christ, and thou shalt be saved, and thy house...)