Why have Black and South Asian people been hit hardest by COVID-19?

Why have Black and South Asian people been hit hardest by COVID-19? The coronavirus pandemic has hit some parts of society harder than others. When looking at social, economic and environmental factors there are differences, particularly for Black and South Asian ethnic groups. Office for National Statistics

See also: 

• Coronavirus and the social impacts on different ethnic groups in the UK: 2020 Office for National Statistics
• Coronavirus (COVID-19) Infection Survey: characteristics of people testing positive for COVID-19 in England and antibody data for the UK: December 2020 Office for National Statistics
• BAME groups hit by Covid 'triple whammy', official UK study finds The Guardian