Second survey wave completed Post author:covadmin Post published:19 January 2021 Post Category:Allgemein The second survey wave closed on 15th January 2021. We have now started to analyse the data from the more than 20 countries. You Might Also Like Main data collection phase of the first survey wave completed1 July 2020 Current figures on participation across the participating countries5 June 2020 Opportunities and challenges in conducting a rapid multi-country study6 May 2021