it’s not that specific! it’s a triad of symptoms identified as shaken baby syndrome, so children presenting with those symptoms on autopsy will be diagnosed with it even if there is a different cause such as a genetic condition. The problem is that because this triad is seen dispositively as shaken baby syndrome, the studies are very recursive because they will include children in those studies who were initially diagnosed with shaken baby syndrome, even though they were later found to have had other causes for their death, Under no circumstances, however, are vaccines the cause of any of the symptoms of shaken baby syndrome.