<span style="color: #222222;">The US has declared a public health emergency over the spread of the coronavirus. It said it would deny entry to any foreign nationals who have visited China in the past two weeks. Officials said US citizens returning from Hubei province, where the outbreak started, will be quarantined for 14 days.</span><br />'' <span style="color: #222222;"><br />'' Earlier, on Thursday, the World Health Organization (WHO) had declared a global health emergency over the new virus.</span><br />''  <br />