World Health Organization's emergencies director Michael Ryan has warned that vaccines will not arrive in time to defeat the second wave of the Covid-19 pandemic. He said, vaccines should not be seen as a unicorn magic solution and countries battling a resurgence of the virus will once again have to climb this mountain without them.<br />'' <br />''<span style="color: #222222;">The WHO director said, he thinks it's at least four to six months before we have significant levels of vaccination going on anywhere.</span><br />