Then aren't we so glad that  estimates for reporting...  suggest as low  as 1% of actual events.  
  VAERS  Reporting   is only the first step  to full on  suing for vaccine damages compensation,-  for which PROOF  of  "BECAUSE needs be established.  VERY tightly from what I've heard,  yet VAERS has at  2011,   forked out over $2 billion
 (and we thought that dealing with CENTRELINK  was  'Impossible'. !)
Dunno what our TGA  is up to ...   
COVID-19 vaccine weekly safety report - 27-05-2021 | Therapeutic Goods Administration (TGA)
Australian Lawyers are not as proactive as their  U$ counterparts,  so it may be  a while before we have any interesting cases.