GENEVA, Switzerland (AFP) — The World Health Organization said Thursday it remained unclear whether additional Covid-19 vaccine doses are needed to protect against the new Omicron variant, and urged wealthy countries to avoid hoarding the jabs. The UN health agency’s vaccine advisors warned that a rush to stockpile more jabs, especially without clear evidence they are needed, would only exacerbate the already glaringly inequal vaccine access around the globe. “As we head into whatever the […]