<p>The head of the World Health Organization said on Tuesday that he expected all countries, including China, to collaborate in the second phase of a probe into the origins of the coronavirus after an initial mission to China.</p>.<p>Speaking at a Geneva-based event on trade and Covid-19, WHO director-general Tedros Adhanom Ghebreyesus said that he hoped that the next phase of studies would begin as soon as possible.</p>.<p>He also repeated his support for an international treaty on pandemic preparedness and response. "The world needs a framework," he said. </p>.<p><strong>Check out DH's latest videos:</strong></p>
<p>The head of the World Health Organization said on Tuesday that he expected all countries, including China, to collaborate in the second phase of a probe into the origins of the coronavirus after an initial mission to China.</p>.<p>Speaking at a Geneva-based event on trade and Covid-19, WHO director-general Tedros Adhanom Ghebreyesus said that he hoped that the next phase of studies would begin as soon as possible.</p>.<p>He also repeated his support for an international treaty on pandemic preparedness and response. "The world needs a framework," he said. </p>.<p><strong>Check out DH's latest videos:</strong></p>