New coronavirus variants can be more dangerous than delta variants

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The world is competing to contain and understand the rapidly spreading and potentially more dangerous variants of the coronavirus. On Friday, a panel from the World Health Organization named the variant Omicron after it was first detected in South Africa. It has already been found in Belgium, Israel and Hong Kong. The news has triggered a wave of new international travel bans, including the United States. Deborah Patta reports.

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