* Will vaccines stop Omicron? Scientists are looking for the answer
* Omicron Covid variant symptoms described as ‘extremely mild’
* Omicron variant vaccine could be ready in early 2022, says Moderna
* Global markets set for anxious week of digesting Omicron news
* No deal in sight as US nears Dec. 15 deadline to raise debt limit
* US Dollar Index fell from 16-month high on Friday: