December 28 coronavirus pandemic and Omicron variant news
![<i>NIAID-RML</i><br/>The US reported a record seven-day average of new Covid-19 cases on December 28](https://ktvz.b-cdn.net/2021/12/hypatia-h_1320a041babe9520c7f84eecd570421e-h_c38a370f684ade07f986f5c214a3df5c-300.jpg)
The US reported a record seven-day average of new Covid-19 cases on December 28
By Helen Regan, Adam Renton, Aditi Sangal, Melissa Macaya, Mike Hayes and Melissa Mahtani, CNN
The-CNN-Wire
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