On tonight's CBS Evening News podcast -- with so many questions still remaining about the new Omicron COVID variant, why health officials are still raising alarm bells over the Delta variant -- and could we see a post-Thanksgiving surge? Also -- what we're learning about the three Christian aid workers released by their kidnappers in Haiti. How are they doing, and was a ransom paid to help secure their release?

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CBS Evening News with Norah O'Donnell, 12/06