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Director-general of the World Health Organization, Tedros Adhanom Ghebreyesus, on Monday said a vaccine on its own will not be able to end the COVID-19 pandemic.

Tedros made the remarks at the 147th session of the Executive Board. "A vaccine would be essential for bringing the pandemic under control. But it's important to emphasize that a vaccine will complement the other tools we have, not replace them," he added. 

Tedros warned that initial supply of the vaccines will be limited, so healthcare workers, older people and those at risk will be prioritized. "That will hopefully reduce the number of deaths, and enable health systems to cope, but the virus will still have a lot room to move."