The World Health Organization (WHO) has called for an extension of a global moratorium on Covid-19 booster doses, with an aim to enable every country to vaccinate at least 40 per cent of its population.

“A month ago, I called for a global moratorium on booster doses at least until the end of September, to prioritise vaccinating the most at-risk people around the world who are yet to receive their first dose,” WHO Director-General Tedros Adhanom Ghebreyesus told reporters here.