Two billion doses of “safe and effective COVID-19 vaccines” have been secured by the international equitable vaccine alliance COVAX, and they will be ready for distribution as soon they are delivered, the UN health agency chief said on Friday. Two billion doses of “safe and effective COVID-19 vaccines” have been secured by the international equitable vaccine alliance COVAX, and they will be ready for distribution as soon they are delivered, the UN health agency chief said on Friday. Read MoreUN News – Health