COVID-19 vaccine, the U.N. agency said on Friday, broadening access to the shots. WHO says continue to use AstraZeneca vaccine, will investigate issues It is the third COVID-19 vaccine after those of Pfizer/BioNTech and AstraZeneca to receive backing from the WHO.The listing covers use in all countries and for the vaccine platform COVAX’s roll-out.The decision comes on the back of European Medicines Agency (EMA) authorization announced on Thursday.“Every new, safe and effective tool against COVID-19 is another step closer to controlling the pandemic,” WHO Director-General Tedros Adhanom Ghebreyesus said in a statement.