To find out if you introduced something which caused a lot of harm to people, you can examine the trend of publishing frequency for selected adverse events. Here are a few select adverse events that are most-likely caused by the COVID shots (note the spike in publishing frequency during COVID):
Bell’s Palsy:
Cerebral Venous Sinus Thrombosis:
Immune Thrombocytopenia:
Myocarditis or Pericarditis:
Pulmonary Embolism:
Thrombosis with Thrombocytopenia:
These sharp increases in the number of published reports suggest that the COVID shots have vastly increased the number of people suffering from these conditions.
For perspective, here is a search performed with a search string of 4-character, truncated words designed to capture nearly all medical articles published in the English language: