The manufacturers of anti-covid vaccines, the States which have purchased them in large quantities, sometimes well beyond their needs, as well as the vaccination sites have thrown away 1.1 billion doses of vaccine since June 2020. The bank of data Airfinity, which specializes in medical information, tracked the waste of doses. It estimates at 10% the rate of production that might not be administered in the world. Main reason: the solutions were out of date. In Switzerland, 620,000 doses were destroyed in May.