Woo Jae-gun's wife was initially diagnosed with no abnormalities after a blood test at Seoul National University Hospital.

Woo Jae-gun's wife, previously healthy, developed severe Alzheimer's symptoms 10 days after receiving her second COVID-19 vaccine dose.

Woo Jae-gun's report of his wife's abnormal symptoms to the local public health center and subsequent compensation claim resulted in a 4-2 ruling denying any causal link with the vaccine.