Only Iran? There must be more unless similar issues to here
What's the mechanism for an average of 4.5 infections per person in Iran and absolutely nothing like that here, still an average considerably less than one, and less than 1% re-infection rate here (50,000 possible re-infections and ~600,000 positive cases identified a year ago) but for the re-infections in that Iran twitter thread to be extendable to here, then the Winter wave would be recent enough which means 50,000 out of 4 million cases.
We need some explanation of why the Iranian data would be more correct than here, the thread talks a lot about "estimated attack rate".