The COVID case fatality rate appears to be 1 in 69. The vast majority of deaths were among those over the age of 60 and almost half were in care homes. Northern Ireland has a lower vaccination rate per head of population than the neighbouring Republic of Ireland. On 23 March 2020, Northern Ireland went into lockdown with the rest of the UK.
https://en.wikipedia.org/wiki/COVID-19_pandemic_in_Northern_Ireland