New serology from Iran suggesting very high attack rates by early June in several cities. Interestingly, the serology data matches calculated AR from excess mortality data from late Sept. Note: all the cities with high attack rates as of June have less than 2 million people each https://twitter.com/Mahan_Ghafari/status/1339059090438426624
Study calculating attack rates from excess mortality can be found here: https://www.medrxiv.org/content/10.1101/2020.12.07.20245621v1