<span style="color: #222222;">Director-General of the World Health Organization Tedros Adhanom Ghebreyesus has said that COVID19 vaccine nationalism needs to be prevented.  <br />''<br />''The WHO Chief had tweeted that for this reason, WHO is working with governments & the private sector through the ACT-Accelerator to ensure that new innovations are available to everyone, everywhere starting with those at highest risk.</span><br />