WHO urges effective, fair use of COVID-19 vaccines On Kindly Share This Story: The World Health Organisation (WHO) has urged governments to prioritise inoculation of health workers and older persons, and to share excess doses with other nations as COVID-19 vaccines are currently in scarce supply. Dr Tedros Ghebreyesus, WHO Director-General, made the appeal in a speech posted on the WHO website. Ghebreyesus, who spoke at the WHO headquarters in Geneva, said more vaccines are being developed, approved and produced, saying “there will be enough for everyone. “But for now, vaccines are a limited resource. We must use them as effectively and as fairly as we can. If we do that, lives will be saved.”