CTV News: 'Alberta is reporting an unprecedented increase in ill-defined and unknown causes of death in 2021. That category is leading the way over dementia, which has been in the top spot since 2016, and COVID-19, which began adding to the death tally in the province in a big way in 2020.
'In 2021, ill-defined and unknown causes of death snagged the first spot with 3,362, up from 1,464 in 2020 and 522 the year before that, according to statistics from the Government of Alberta. The unknown causes of death category only began appearing on the list in 2019 — there is no record of it ranking before then, dating back to 2001.'