Just take a look at the list of possible side effects straight from the FDA. Page 16
FDA Safety Surveillance of COVID-19 Vaccines :
DRAFT Working list of possible adverse event outcomes
***Subject to change***
Guillain-Barré syndrome
Acute disseminated encephalomyelitis
Transverse myelitis
Encephalitis/myelitis/encephalomyelitis/
meningoencephalitis/meningitis/
encepholapathy
Convulsions/seizures
Stroke
Narcolepsy and cataplexy
Anaphylaxis
Acute myocardial infarction
Myocarditis/pericarditis
Autoimmune disease
Deaths
Pregnancy and birth outcomes
Other acute demyelinating diseases
Non-anaphylactic allergic reactions
Thrombocytopenia
Disseminated intravascular coagulation
Venous thromboembolism
Arthritis and arthralgia/joint pain
Kawasaki disease
Multisystem Inflammatory Syndrome
in Children
From the link.
“>92% of US elderly use Medicare so database represents the elderly population and not a sample”
Well, DUH, when you make it mandatory and force seniors to forego better private insure of course you’re going to have most of them using it.