[https://www.nytimes.com/2020/10/31/us/politics/stanford-study-infections-trump-rallies.html?action=click&module=Top%20Stories&pgtype=Homepage](https://www.nytimes.com/2020/10/31/us/politics/stanford-study-infections-trump-rallies.html?action=click&module=Top%20Stories&pgtype=Homepage) >"The researchers used a statistical model to extrapolate infections tied to 18 rallies, and the study’s figures were not based on individual cases traced directly to particular campaign events."