Vaccine Safety Datalink has this data. It's not nationwide, but covers a decent chunk of the country [1] There are about 9 million people whose medical record

Vaccine Safety Datalink has this data. It's not nationwide, but covers a decent chunk of the country [1] There are about 9 million people whose medical records are included in the dataset. [1] https://www.cdc.gov/vaccinesafety/ensuringsafety/monitoring/vsd/index.html https://www.cdc.gov/vaccinesafety/ensuringsafety/monitoring/...