Head of UN health agency seeks vaccine booster moratorium

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GENEVA (AP) — The head of the World Health Organization is calling for a moratorium on administering booster shots of COVID-19 vaccines as a way to help ensure that doses are available in countries where few people have received their first shots. WHO Director-General Tedros Adhanom Ghebreyesus made the appeal on Wednesday mostly to wealthier countries that have far outpaced the developing world in numbers of vaccinations. WHO officials say the science is unproven about whether giving booster shots to people who have already received two vaccine doses is effective in preventing the spread of the coronavirus. WHO has repeatedly called for rich countries to do more to help improve access to vaccines in the developing world.

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