So, just to be clear NPR is essentially a federation of local public radio stations and not a single editorial board. That being said, WNYC's On The Media did a great breakdown of reporting miscues and the political word-twisting about Ivermectin. They've also done breakdowns on lab leak theory and a lot of other hot topics. Some misleading stories have been weasel-worded reports of reports, but also Tucker Carlson and his ilk are the ones willfully sponsoring disinformation.
https://www.wnycstudios.org/podcasts/otm/segments/how-iverme...