"The horrible vaccine reaction endured by this baby girl is fairly common in the FDA Vaccine Adverse Event Reporting System (VAERS). When I examine VAERS reports, I see many rapid-onset cases like this of stopped heartbeat (sudden death), seizures and encephalopathy (brain injury) associated with all vaccines (this one was DTaP). Encephalitis is the medical textbook definition of a vaccine adverse reaction and VAERS is full of reports like this. No one at the FDA, CDC or American Academy of Pediatrics cares."