by Robin MILLARD GENEVA, Switzerland (AFP) — The World Health Organization’s vaccine advisers on Monday recommended people with weakened immune systems should be offered an additional dose of all WHO-approved Covid-19 vaccines. The UN health agency’s experts also said over-60s fully immunised with China’s Sinovac and Sinopharm vaccines should be offered an additional third vaccine dose. The Strategic Advisory Group of Experts on Immunisation (SAGE) stressed it was not recommending an additional booster dose for […]