New Zealand has begun its Covid-19 vaccine programme.
But countries such as South Africa have been struggling to access adequate supplies of vaccines after wealthier countries stockpiled more doses than they could possibly use.
This is despite the work of COVAX, the organisation set up to improve access to vaccines for low and middle income countries.
It's forecast that some poorer countries will have to wait until 2022 and beyond before vaccines are widely available.
Fatima Hassan is a human rights lawyer and the founder of the Health Justice Initiative in South Africa.