4,115 cases (3,907 hospitalized; 750 died) out of 150 million fully vaxxed. 76% were 65+ years old. That's when Delta was ~33% of new cases.https://www.forbes.com/sites/brucelee/2021/06/26/cdc-4115-fully-vaccinated-have-been-hospitalized-or-died-with-breakthrough-covid-19-infections/?sh=e982a156993e