unperson - a positive test result is not required
Из словаря ONS
Coronavirus (COVID-19) deaths are those deaths registered in England and Wales in the stated week where COVID-19 was mentioned on the death certificate as “deaths involving COVID-19”. A doctor can certify the involvement of COVID-19 based on symptoms and clinical findings - a positive test result is not required.
казалось бы, все понятно, что доктор скажет, то и запишем
ан нет, смотрим словарь правительства
All the deaths data shown on this website are deaths of people who have had a positive test result confirmed by a Public Health or NHS laboratory...
Deaths of people who have tested positively for COVID-19 could in some cases be due to a different cause
Сдаюсь.