A staff member displays samples of the COVID-19 inactivated vaccine at Sinovac Biotech Ltd., in Beijing, capital of China, March 16, 2020. (Xinhua/Zhang Yuwei)

COVID-19 vaccine development and deployment in China, when available, will be made a global public good, which will be China's contribution to ensuring vaccine accessibility and affordability in developing countries, said Chinese President Xi Jinping on Monday at the opening of the 73rd session of the World Health Assembly via video link.