The company’s move follows reports that some batches waiting to be distributed from the Gqeberha Aspen plant had been contaminated.

The vaccines were affected by contamination issues at a US vaccine plant in Baltimore. Some of the affected doses were cleared, while others were destroyed.

On Sunday, government and the South African Health Products Regulatory Authority (Sahpra) assured South Africans that the contaminated doses will not be released in the country.

Sahpra CEO, Dr Boitumelo Semete-Makokotlela speaking about contaminated J&J vaccines: