WHO Director-General Tedros Adhanom Ghebreyesus. (Photo: Xinhua/VNA)

He told a briefing in Geneva Thursday that “No disease in history has seen such rapid development in research.” “This is a testament to the incredible advances in science and technology the world has made in recent years.”

The WHO chief also expressed concern that bilateral agreements and nationalism could affect equitable access to the COVID-19 vaccine. He called on giving access to the vaccine to as many people as possible.