Edit April 20th, 2021: thanks to Christos Petrou I found a bug in my code. I was considering both "Section" and "Collection" articles as Speical Issue. The whole analysis has been changed to accommodate the new data. I also acknowledged in the text the arguments of Volker Beckmann, who develops a coherent defense of MDPI…
via CDC We've been tracking retractions of papers about COVID-19 as part of our database. Here's a running list, which will be updated as needed. (For some context on these figures, see this post, our letter in Accountability in Research and the last section of this Nature news article. Also see a note about the…