"CDC: 4,115 Fully Vaccinated Have Been Hospitalized Or Died With Breakthrough Covid-19 Infections"
https://www.forbes.com/sites/brucelee/2021/06/26/cdc-4115-fully-vaccinated-have-been-hospitalized-or-died-with-breakthrough-covid-19-infections/?sh=3684b5606993
Combine that with the fact that as little as 1% of vaccine adverse events are reported to the VARES system.
https://www.covid-19forum.org/index.php?topic=716.0