On August 4th of 2020, an online meeting was held with the primary investigator and managerial and executive members of the PERSIAN Birth Cohort. In this meeting, the primary results of the data quality assessment were discussed. Missing data was detected and the instructions for evaluating and completing the missing data were discussed. Then, the results of a project on assessing the knowledge of families participating in the PERSIAN Birth Cohort study about the COVID-19 were debated. The problems aroused in the process of finding the families’ residential area by using GPS were discussed. At last, managers from each of the study sites presented a brief report on the status of the project in their region.