–old man–
On daf ?? of eiruvin, both amud aleph and amud beis, there is no tosfos d’h amru. In taanis, daf chof alef amud aleph has one, but purely centered around the gemorrah. On daf beis, there is a d’h amar, but i fail to see how that is a possible reference to the black plague. Perhaps you could explain?