The head of one of China’s Covid-19 vaccine development projects has promised that the supply of jabs will improve in the coming months, after it was reported that some parts of the country were facing acute supply shortages.

In an interview with the Global Times on Tuesday, Zheng Zhongwei, director of the Development Center for Medical Science and Technology of the National Health Commission (NHC), accepted that the country was grappling with a shortage of Covid-19 jabs.