The World Health Organization has urged China to share data to help understand the origins of Covid-19, five years on from the start of the pandemic in the Chinese city of Wuhan.

The World Health Organization marked the fifth anniversary of the emergence of COVID-19 on Tuesday by reiterating its call for China to release the data it holds and allow outside access.

China has shared the most COVID-19 data and research results in the international community, its foreign ministry said on Tuesday, after the World Health Organization repeated its call for more information and access.