I assume that's the number of confirmed cases? Because we know that's a huge underestimate, even in countries with widespread testing. For example in the UK app

I assume that's the number of confirmed cases? Because we know that's a huge underestimate, even in countries with widespread testing. For example in the UK approximately 15% have had an infection already, and that's with lockdown measures etc: https://www.ons.gov.uk/peoplepopulationandcommunity/healthandsocialcare/conditionsanddiseases/articles/coronaviruscovid19infectionsurveyantibodydatafortheuk/3february2021 https://www.ons.gov.uk/peoplepopulationandcommunity/healthan... I'm making the assumption that we want to reopen our economies again at some point, at which point the infection risk will obviously rise much higher than that (unless we have reached herd immunity). The only way to prevent that is to get people vaccinated. And right now for many countries in Europe AZ is the only vaccine available, since the supply of the mRNA vaccines is for too low.